Re: bumping into the digital era!
I have found that you are never going to find one console that fits every rider... For a long time you could probably get away with an M7 for 3 out of 4, and now it seems that a SC48 has kind of taken its place, that being said both are out of your budget, and neither will probably be the most rider friendly boards 2 years from now. I Like the Pro2 but I don't know if it is going to catch on the same way...
It sounds like you have a lot of systems going out at once. I would suggest that you look into a few boards in the Behringer X32 line. IMO they are pretty easy to use and in your budget. You could get a full size and probably a couple of compacts and start getting your whole crew trained all at once. you can probably recoup some of your costs by selling off some of your analog boards and processing. Then when the M32 comes out if you think that it makes sense for you, everyone will already know how to use it since it is essentially the same console with some non user interface related upgrades.
The X32 is generally well received and I have even worked with a bunch of B-C level national acts that said they have run into them on tour and gotten through the gigs quite nicely on them. I know many people are still afraid of the "B" word, but my hats off to them, I am a proud owner of 3 x32s and I have plans on 2 more in the next few months.