Right now I have 70cc Iron Heads(World S/R-suppose to be 67 but come out closer to 70) with 9.5CR and a 268/274 solid cam. I want to swap some 67cc Brodix Aluminum heads on the motor. My DCR now is 7.92, but with the new heads it will bump up to around 8.15 or so. Am I going to have any problems with the big bump? Does anyone have any experience swapping from iron to aluminum heads?

I just want to make sure I'm not gonna ping with new heads.

Going from iron to aluminum will make your engine LESS likely to ping. If your DCR is 7.92 with the iron heads it will be about the same with aluminum. Even if your DCR goes up a few tenths due to smaller combustion chambers you should be fine.