that echoes my view of it as well; the deep state must be smashed in the halls of burrocracy at the same time it is smashed in the media rooms; delaying just allows them to grow stronger. The big concern is vote fraud.
the reasoning for waiting may be this (fwiw, idk, I'm spitballing here)
1- A red wave midterm election will signal public choice for bolder moves on Trump's part
2- Doing thing by the books can take a long time - see previous mafia RICO trials for time frames
3- giving them rope to hang themselves with additional perjury/obstruction/conspiracy charges
and all them assumes Trump is acting against the deep state and the left