No real idea really, no one but the team can give ya estimates.
But you can do the guessing based on the facts we have. They're adding sites in order of popularity.
A site called
PokerScout tracks the amount of players online on different sites. They'll add the rooms in that order so you should check it out. At the moment they've been mostly focusing on getting the product itself done. When they're done with the mechanics, adding more sites will probably be the top priority and you'll be seeing new sites faster.
I think PT2 can autoimport UB hands no problem, don't know about that program.