Bill:

First, I'd probably opt for a T2 (or 3, if available when you send me the money) and with the rest of the cash, I'd make sure I loaded up with all the styles I'm interested in using. I'd also probably commission one of the great style-creators to produce a style or two using the dobro. I'm hearing it played in more and more songs... not just bluegrass.

Next, I'd experiment with Controllers and better sound systems like Bose PAS and others.

If I had any money left over, I'd consider buying a recent Korg or Roland G70 or whatever keyboard I considered highly after a significant trial at George Keyboard shop in California. He's such a knowledgable guy!
Hope your funds approve air-fare, lodging and car rental!

All my best. Your fellow songwriter.

Dave Rice