RobertA

unless you really think it will seriously damage your reputation within your firm, I would keep going. You have done a lot of the hardest material -- quant and FSA were the worst for me, and i'm sure lots of other people feel the same way. According to that (scary!)counter on the front page of this site, there are 52 days until the exam. if you can do 3 hours a day, that's more than 150 hours, which is quite a lot, assuming you have a good grasp of the FSA/Quant material and will only need to review it (not learn it).
up to you, but if i had put in as much time as you, i would give it a shot.