You are still making emotional choices, rather than economical ones. You could have chosen to take a shorter courseload in something that would give you more job security and more money than teaching. A ten-month LPN course will give you an average $40-45K per year in California. See what I mean?
I went to school FT and worked FT while I was the sole provider of an infant. If I can do it, anybody can.
Not true. There are things you can do as a 20 something that you simply CANNOT do as a 40 something. The body ages.
OP is planning on teaching math. There is a high demand for math and science teachers.
I think OP is trying to get a reality check or confirm whether or not she is getting correct legal advice. Yes, one likes to trust one's lawyer. But if one is good at math, one soon realizes that it costs money to vent to the lawyer, and that it pays to keep communications concise and legally relevant.
OP: yes, a judge can impute income. The judge can also impute income for the ex as well. Based on your limited work experience, it is likely that your income will be imputed at a lower level. As your husband worked throughout the information, he is likely to be imputed at a higher level, even if his bookkeeping is a mess and he hasn't filed a recent tax return. Presumably he has a profession and there is a median income for his profession that could be used as a basis for imputing his income. You might find an articles from the Bureau of Labor Statistics for evidence of this.
(Because THIS information is something that you can provide to your lawyer.) Or an older tax return can be used...