Too much.
Look it's summer and school's out, right? How about you and your partner get in the car with your bankrolls, laptops and a Motel 6 catalog and hit the road? You guys have the dedication and the knowledge, what are you jerking yourselves around with a $25 max game for? You have some excellent games just a few hours to the East, and I suggest you get out there and see what real blackjack in real casinos is like.
Can you give me some details of the great blackjack in MN that you've been mentioning? I have only been to Shooting Star Casino. They had an amazing DD game, but the rest of their tables were crappy 6D games. PM me if you want.