Good question I plan on hydroboost down the road also.
There IS another option. If you wanted a conversion kit, but wanted something better than the stock master cylinder, you could add the SSBC Firm Feel master Cylinder to the package and go with it. In this case I had listed that part before even being a sponsor here just because members on another forum gave great reviews for the improvement in the brake feel after install. It MAY be an option. I have contacted SSBC about the combination of the conversion kit with a hydroboost set up so I should have a firm answer for that in the morning. You can check out the firm feel master cylinder at the link below...
http://www.gmt400.com/forum/showthr...rom-Synthetic-Motorsports&p=192038#post192038