Yes, absolutely agree with all that.Impeachment is high risk. Lose that and he actually gets a bounce. They don't have the votes to win it just now but they might later, depending upon what comes out that is not yet public knowledge.
Far better to turn this in to a long term dripping roast, using the un-redacted version of the report to purse a whole series of mini inquiries designed to nail his reputation.
As for criminal convictions, there are two targets. Trump after he leaves office and his sons, son-in-law and closest aides while he is in office. If those 14 other investigations pull any or all of those into court it is effectively the same as putting him on trial.
Mueller's report effectively says that it isn't his job to prosecute Trump and that he has neither a) the evidence to prove collusion nor b) the ability after all that has been investigated to say that he should be exonerated. What it also effectively says is 'here's a whole litany of dodgy things - including obstruction of justice - which either should be, or in many cases already are, being investigated by other agencies which do have both the power and the responsibility to prosecute.
Informed commentators suggest that Trump's real fear throughout all of this was not that he would be found guilty of collusion with the Russians, but that the investigation into that would open up every other can of worms that he knows is out there in his past and ongoing business life and which could lead to prosecution - or worse still in his world - business/commercial failure.
This isn't going away for him, ever. One way or another he will be finished by all this.