Retcon file 1: The ark of relative truth.
Due to the nature of the device it's been removed from this universe, the potential for abuse is too great, the device in canon could be reprogrammed to convey any information in a way that forces individuals to believe it as factual.
Therefore, here's a brief summary of what really happened. Daniel shoved the anti-ascended Ori weapon through the supergate destroying them. A year later a prior stepped through a milky way gate and all the crusader forces slowly withdrew back to their Galaxy.
Adria possessed by Baal was shot and killed, and the ascended finally stepped in and did something using Baal as their excuse, they prevented her ascension.
The galaxy was left in chaos, but an ori attack earlier resulted in a united earth. earth slowly starts spreading its domain to the local systems, meanwhile the rest of the galaxy remains in shambles.
Lucian, Jaffa, Tok'ra, Kelowna, and other races; all more focused on rebuilding their own holdings to help the numerous other worlds. So none of them even notice when the first wraith ship arrived.
Soon the galaxy was covered with wraith ships, each choosing a different approach to maximize their chances of success.
Earth finally noticed when one of their ships reports barely escaping an engagement, this leads to them gearing up to fight again.
unfortunately the supergate also opens signaling the renewed efforts of the priors to convert the galaxy, most likely in the belief that doing so would see the return of the ori ascended.
Retcon file 2: Stargate transportation method.
The Stargate does not rely on the dematerialization principle, as that would cause problems for people who stick body parts into the blue stuff for long periods of time to hold the gate open.
Instead it works on similar principles to Merlin's phasing device and stasis fields.
People entering the gate are wrapped in a stasis field, and moved out of phase. when the gate detects a complete package it sends them through the hyperspace tunnel the stasis field acting like a mag rail train car shuttling them along.
This means that larger items actually take slightly more power to send. though this is negligible compared to the amount of power required to open the initial connection.
Chapter 1
It was time to change the situation. General James Patchkirk looked out at his fleet. A fleet of just three ships, the culmination of all the tech acquired over the past decade through the Stargate program.
Mistakes had been made on all sides, sure the first enemy had been defeated, snake like parasites with delusions of godhood. They even held off the next enemy for a while, and with less advanced technology than the ancients had when they first encountered the Wraith. But quantity has a quality all its own, and eventually the great city has been withdrawn from the conflict to Earth.
For a time they even thought they had beat their third enemy in the Ori. But then reality sunk in, they'd toppled the Goa'uld leaving a power vacuum, then the arrival of the Ori removed most of the major powers that would have stabilized the situation. Then the first Wraith ship showed up, easily destroyed but it seemed like the Wraith had sent every hyperspace capable ship in Pegasus. There were too many ships, false positives from indigenous hyperdrives, that the cruisers and hives arriving from interstellar space where quickly lost.
By the time they got off their feet about the Wraith, the supergate activated unleashing ship after ship of vengeful warriors led by corrupt former priors. Earth held for a time the last stronghold, Atlantis's shield bolstered by the energy production capabilities of the entire planet.
Eventually the supply of drones in Antarctica where depleted.
By this point, James' fleet was the only one left and the risk at this point was considered justified. The battle group would try to jump back in time to a point when they could make things different.
It was a half baked plan, at best.
First up was the salvaged temporal drive from the Janus jumper. Enlarging the window to encompass all the Earth ships worked. For about thirty seconds before it sputtered and burned out leaving them only a year after the Wraith had arrived in the galaxy.
But that wasn't enough for General Patchkirk. He looked out the window and activated the comm. "This war has worn on us, but we are not defeated. We've managed to come this far, but not far enough. I firmly believe that if we aren't winning then we haven't tried hard enough. Others may call this a cheat. But for us this is survival against the odds. We've managed a short jump now let's try for the long one."
The general shut off the channel and turned back to his Navigation's officer, Maxwell Sheppard. "Punch it Max," he ordered.
The three ships drew closer together and with a few scans and number crunching opened a hyperspace window that went through a forming solar flare.