1) Only some schools look down on or do not accept community college credits for pre-reqs. As long as you do well on the MCAT, you should be fine, as long as you don't need to go to Yale.
2) Yes. Why not? If you are already a year ahead, there is no use rushing into the application process if you think your ECs are lacking. Spend one easy year building up the other areas of your application, and then apply when you feel confident in every area.