Suggestions for the Best Comp Ratio, Pistons & Cam for Street 340

I have a 9.8:1 340 w an XE268, Worked over 2:02 J heads, LD340, Holley 750, TTIs, 3:55 gears w a 4 speed in my 69 swinger. Pulls hard up to 6000 RPM. Runs perfectly fine on our crappy 91. My cylinder pressure is only 150 across the board, just fine for pump gas.