Just to wrap this up, I gave up on a power setup and went with manual. The SSBC booster M/C combo starts around $240. Since alot of people are running manual brakes with no complaints I thought I'd give it a go. This car is for my wife by the way, if it was just for me I would have gone manual from the start. We'll see if she notices ....
So I went with a 85 Diplomat M/C from Autozone, and ordered the MC adapter plate from Mancini. The Autozone M/C looks exactly like the ones sold by Mancini but only cost $35.
Thanks for your help everyone!