340 Magnum Piston/Head Clearance

Hello guys, need a little advice before I continue my build any further.

Building a 340 with EQ magnum heads, KB 243 30 over pistons. The pistons come out just a tiny bit...I believe that small rise (that comes out of the deck) on the pistons are almost .030...not sure if I measured right.

For those that have used magnum heads, what is generally the best way to do this? Thicker head gasket or milling of .030 from the top of pistons?

This will be a mostly street driven car but want to leave power on the table. If I mill the pistons compression will go down...therefore, what is the best route here?

Thanks,

-Germz