DH, my mom, and I have been talking and this is obviously an emotionally driven decision (although financial too). I know ultimately we have to decide... but I guess I just want your guys thoughts/viewpoint/opinions regarding us moving back home. We have basically made up two options.
Re: I need an outside point of view.. (Moving)
This what I would do if I were in your position with the details given. I would aim for scenario 1 but be flexible for scenario 2 if DH found a good job. I would let the job hunt take the lead on deciding when to move. If your DH finds a good job next month move then if he hasn't found a good one until closer to May then wait. I am all about financial security balanced with happiness. You will be happier when you move home but how happy will you be if your DH takes a not so good job (and is unhappy about it or doesn't make as much) and you have to move twice in the next year just to make the move happen a couple of months sooner?
Also some of the pros in the second scenario aren't guaranteed. If your DH ends up being less selective about finding a new job to make the move happen sooner then even if you are saving money on rent it might be canceled out by the lower paycheck making it so you wont actually have more for a down payment. KWIM? I would have DH start looking for a job aggressively now and be flexible about the moving date.