I personally don't like taking a full-length before all the content review is done. As you probably already know full lengths are pretty valuable since you have to pay for them and once you do them then re doing them is not really that helpful. So if you do one before doing full content review, your score might not be accurate because you could have missed questions simply because you never practiced that concept. Therefore finish all your content review first and then do all the full length. My schedule has the month before my mcat fully dedicated to doing full length, reviewing the full length and then going over some of the high yield concepts for a second time. So I would suggest finish your Ochem and Gen Chem review by the end of november (or at least a month before your test date). Then do a full length every two days (reviewing the full length and going over old concepts for a second time within those two days).
As for verbal, there really isn't any concept you can review. The only way to prepare for verbal is to do as many passages as you can before the exam and then carefully review every answer. Make sure you review both correct and wrong answers so you know if you got a question right for the right reasons. Try to do 3 verbal passages a day, even on full length and review days
Also I assume you are not studying on the days you work your 8 hour shift. In that case 6 hours of studying on your day off is probably not enough. So I would suggest, if you can, spend a little more than 8 hours studying on your off day to make up for the 3 times a week you are not able to study. I would also recommend to take the month before your exam off from your employer. Like you said, the month before you really have to buckle down and focus so having those extra 3 days a week will be a tremendous help. This option might not be realistic though since a lot of employers probably don't want to lose an employee for a whole month. No harm in asking your boss though.