Depends on how handy you are. I went with a 12" brake set up off a 2000 trams am and a hydro-boost from a 90s AstroVan. Took a bit of homework and fabrication but worth every bit. She stops better than a new car and I don't have to worry about not having enough vacuum to run a std booster.
I went with the SS Brakes kit that does not require changing the spindles, the brake lines all fit perfectly, the only thing I got different was a CE proportioning valve that was set up disc/drum because it fit in the stock location SSB didn't have one.
If you bench bleed your master and hook up a container of brake fluid upside down like a IV to the top of the hood and with a hose run the fluid into the front line and then rear line that would go into the master, open the farthest cylinder bleeder first and in a few minutes all air will be out, then do the other.