I can relate to a similar situation. Without wasting time on my details, I will tall you what I am doing for now.
I search craigslist every day for child care or tutoring (since I am a laid-off teacher). But there are other things under the "gigs" section for house keeping or other skilled labor.
Right now, I watch someones kids in her home twice a week and I bring my kids with me. That is all I have been able to find for the moment that fits my schedule. But I search every day and I email people about any and every job i think I am qualified to do that won't interfere with my husband's schedule.
If you are in as dire a need as me financially, I wouldn't worry about what your husband deserves as far as relaxation for now. you will both be able to relax more if your money situation gets a little better. I personally would love to waitress or bartend once the kids are in bed, but my husband does a lot of over night on call, so I just can't. But if your husband is definitely home by 7, maybe try that.