Replying to Mounting question and Boot punch question

Okay so i recently picked up a pair of line chronics and am most likely going to drop them off tomorrow to have the bindings mounted. I know a lot of you will say to just center mount them, but if i don't plan on park skiing more than 1/2 of the time on the hill, is it worth it? What would be the pro's and con's of mounting it recommended (which on the chronics is a few cm back from center).

Second question. Last year i picked up a new pair of boots. I got some custom foot beds also and with them in, there is a slight pressure point at the top of my arch(foot guy said i have sumgglers feet cuz my arches are so fuckin big). I've also had a slight issue with both of my big toes pressing into the front of the boot a little too hard. I've got ingrown toenails so they become a pain in the ass when shoved into a pair of boots. Are those areas able to be altered a little bit? Or should i do anything before i decide to go and have them altered and punched a bit.

Thanks for all the advice guys.