Wow - it sounds like you have some stress with work (I admire your profession!) and the med withdrawal can't be helping. I'm sorry to hear you're in this situation. It happens a lot, especially with general practitioners it seems. I hate to say that, as it's a generalization (and some are excellent!), but I tend to see it a lot.
So, if you want to discontinue, I will try to recommend a schedule that isn't too demanding.
As suggested above, I would begin the zoloft and stay on it for a few weeks first if you can. This will give it some time to build up and counteract some of the mood symptoms. It's not recommended to taper down off a benzo and taper up on an SSRI at the same time.
Then, after several weeks, you can begin a slow taper. I would suggest getting a pill splitter to be able to decrease in smaller doses. In general, try to decrease by around 10% every 10-14 days. So, if you're taking 2.5mg a day, go down to 2.25 for 10 days, etc. Clonazepam has a long half-life, so it will take a long time for a non-disruptive taper (for example, if you quit cold turkey, it would take 5-7 days for the worst withdrawal symptoms to hit). However, I think the schedule above should be alright.
If you experience severe withdrawal symptoms, you could supplement the withdrawal with diazepam. Some people have to do this, as it lessens the withdrawal symptoms. Of course, then you need to discontinue the diazepam after that, so it can be messy.
My guess is that if you get the SSRI into your system for a while and go down very gradually you should be doing great in a couple of months. I know it's not fast, but it's safe, which is more important.
I truly hope this helps...