After 225 years, one would think all the points you brought up would have been statutorily settled. No such luck.
I’m not all confident congress will allow a convention. I doubt they would refuse to call a convention after 34 applications, because I don’t put it beyond congress to threaten, bribe, extort . . . do what it takes to prevent 34 applications from happening.
Congress won't bribe or threaten, but they will try to use the unwritten Single Subject Standard and Contemporaneousness Standard to sandbag the effort. Those will probably have to be litigated unless there are enough votes in Congress among conservatives to block such interference.