To quit or not to quit?

Here I sit at 12:00 AM pondering a huge decision. I was already set to leave job number 1 when I have our baby in January. However, I am pondering quitting early. When I say early, I mean in the next month or so.
Job 1 has been awful lately. My boss is the biggest b*tch I have ever worked for, and considering some of my bosses, that is saying a lot. I am miserable there, so miserable. The environment is like a succubus that just sucks the life and joy out of you. One of my coworkers drives me to my last bit of compassion and I have just had it. I am so freaking tired of. I just started bawling today thinking about it this week.
DH told me if I was this stressed, that it isn't worth it. It isn't good for me or the baby, and I have to agree. If I decide to quit, my plan is to do my consulting work to make up for as much of the income as possible. The only issue is that the assignments I get for consulting vary in pay. There is a minimum that I know the pay will never drop under though.
I am just thinking things out:
If I do 6 hours of consulting work a day, or 42 hours a week, the minimum pay would be 294 a week, the maximum would be 630. I know, big difference huh? Here is what out budget would be at $294 a week, the minimum. This is also based on DH just working 40 hours a week. He has been working a TON of overtime lately, but I know better than to depend on that.

Hubbie	2405
Me	1264.2
	3669.2

Mortgage	855
Power	125
TV	130
Phone	80
BOA	200
BOAC	50
1fbusa	200
Chase	30
Credit card	20
Car	285
Geico	80
H20	10
LifeIns.	10
food	400
gas	100
dates	100
misc.	100
cfnc	129
Sallie Mae	100
Wells Fargo	130
Campus Loan	80
Savings	200
Extra to debt	200
	3614

I think it could work. Of course, I pray I will get assignments that pay more than the minimum pay. Normally, the assignments pay more towards the mid end of the range, at least. But, I know we could do it on the minimum. I have just have to be disciplined and make sure I work that six hours EVERY day, without fail. I can do it at any time of the day, which helps out. Our debt paydown will be slow down, but I think at this point, I would be willing to accept it. Sigh. It all sounds so good on paper, but working up the courage to actually make the move is so scary.