In my opinion, a July 22nd MCAT test date is pretty late. You would pretty much have to be on top of everything else application wise in order for the late test date to not hurt you. Meaning you would have to submit your primary AMCAS application, with at least one medical school designated, sometime in early July to ensure your application would be verified by the time your MCAT score is released August 22nd. That means you'll have to get your personal statement, activities description, and LOR requests all done between now until early July on top of studying for the MCAT.
Then after you take the MCAT on July 22nd, you would start pre-writing secondaries. You would designate the rest of your schools on August 22nd/23rd based on your MCAT scores, and turn around secondaries fairly quickly to ensure your application would be complete as early as possible.
I would probably just focus on doing well on the MCAT and wait to apply next year. You want to apply once and when you can put forth the strongest application possible. If you're set on applying this year, then you would have to be on top of everything from now until your MCAT to ensure the late test date doesn't hinder you too much. Otherwise, I would wait until next year to apply.