XE268 and XE274 cams

Just got off phone with Hensleys and told me with my heads and pistons,I would be at 9.7 comp,so they asked me if i want them to mill heads and get my comp into 10.1!They said i could go to 10.5 and run pump gas and get more power!What would you guys do?I told them when i came to pay them i would let them know!