It’s going to take some time just to get a team of lawyers and investigators together who are not sympathetic to Obama/Clinton/Dems and would not include a mole.
Also, they are going to need a team of FBI agents who are not beholden to the Obama/Clinton protectors like Comey and McCabe.
It’ll be a while before any indictments. Job one for the immediate future is making sure no evidence of any crimes by Obama and his team in wiretapping Trump is destroyed.
Hypothetical, of course:
Once Trump knew the when and who; rolling the surveillance tapes from inside the Trump Tower security office was a breeze to prove it. ‘They’ can’t destroy the evidence; and at this point there are 100 copies in 100 different vaults. And Trump personally owns every copy.