Planning
This was going to be a particularly complex plan to execute.
He knew who remained in Suna that he could trust.
And who he could not.
Then there were those who could be bought with a price, never fully trusted but at least they wouldn't openly oppose him.
He had funds of his own as well as control of the siblings' accounts.
And of course there was Temari's dowry.
Participation
He needed four individuals to take care of three groups of people.
The four: Temari, Kankuro, Gaara, Ibiki.
The three groups: those who could be trusted, who could be bought or who must be killed.
The first group could handle the second, Baki's confidants could arrange necessary bribes.
Ibiki was needed to release Temari from her tenure briefly.
She and her brothers would take care of the third group.
Execution
Timing was everything.
He could not have returned to Suna in the immediate aftermath of the failed invasion.
But delaying too long would allow the further collapse of governance in the village or worse, give the daimyo time to propose his own candidate for Kazekage.
Baki could think of no better way to keep Gaara safe from the misdirected wrath of the village than serving as their new Kazekage.
The new ruler must determine all the injuries that he will need to inflict. He must inflict them once and for all ~ Nicolai Machiavelli