WH0R3nEF9

Hey all. I have a 94 GSR with a turbonetics T3/T4 .60 trim turbo kit. I have no other mods yet, but have some questions about some. I want to lower my compression with an HKS 2.6mm metal head gasket. I have 750cc RC injectors, greddy boost controller and a hondata stand alone on the way. Im only pushing 215 horse at the wheels at 6 pounds (good, but i want MORE!) With this setup and a stock head and block, how much boost can i push safely? And if anyone knows a good honda tuner in the midwest, please let me know.
Dave