Losing my SAHD?

Despite the financial disadvantages of living off one meager, maternity-leave lessened teacher's salary, I have really enjoyed having my husband at home the past few months.  It has been invaluable since my return to work last month--laundry is done mostly during the day, dinners are prepared with no stress and little to no night-before prep work.  There are only two people to get out the door each morning instead of four and I have the luxury of taking Zumba class at the gym on Mondays and Wednesdays after work.

Upon returning to work, I learned that there will be some pretty serious layoffs coming.  Given my measly four years seniority and my ever-popular teaching endorsements in secondary language arts, drama, and reading, I was advised to brace myself for the worst possible outcome.  Part of the preparation was finding a second source of income, hence losing my SAHD.  Initially, we decided it wasn't worth it for him to even look for work until the spring or early summer so that Li Li could spend his first year at home with a parent but given that we need at least some money to pay the mortgage each month and access to a health plan for our family, he has begun his quest for new employment over the past two weeks.

Yesterday, he had a phone interview.  The reality set in that we may soon be getting four individuals out of the house by 6:45 every day.  It also occurred to me that I will have to give up my workouts........that means I will remain fat indefinitely.  Ugh.  My dilemma is this: stay fat and get my kids from daycare by 4:30 (closing time), or get the kids by 3:20 on Mondays and Wednesdays and take them to the childcare at the gym until 5:30 (more childcare and less Mom/Dad time).

I know most, if not all, of my current readers are SAHMs, so while I ask for advice, I understand you all may not have any to give.  But perhaps you know someone who has managed to make it work.....with the exercise and all.

Suggestions are welcomed.