Failed inspection for rear brakes, what are options?

I just got a 90 5.0 hatch. Had to get it inspected, assumed I would fail for my airbag light blinking and emissions but instead I only failed for my rear brakes. Apparently one side is completely shot and the other side has like 10% braking power. The front's are fine. SO I know I could probably just go get new drums and be done with it but I was hoping to get through the winter and do a rear end swap in the spring.

Basically I'm wondering if in the 45 day time limit for getting my next inspection do I have time to do a rear end swap when I go to school 4 days a week and have no experience with this type of work. Could me and a few friends do it in 1 or two weekends if I do my homework or am I being ambitious?

And for the record I mean a SN95 rear swap so that I could get the discs, gears and 5lug in one shot.

Thanks stangnet

Ok so it's just the shoes that are bad and not the whole assembly? Because they gave me this little chart and on the one wheel it has NO power and the other it has maybe 10-20%

Ok, I will check that out, thanks a lot.
If I do need new drums, should I do it myself or pay for someone to do it, mind you I have never done it before but I think I can handle it...
From what I hear, bleeding is the biggest pain.