I'm so sorry you're going through this again MrsBob, I had a mmc at the same time as you in Dec, and lost another baby recently (anomalies discovered at dating scan).
I had an MVA in Dec, and found it pretty uncomfortable (although quick), but as I was further along this time and the memory was still fresh I opted for an ERPC this time. It was fine. I too was worried about having a GA, but it's a very light one and the op only takes half an hour (loads of waiting around before and afterwards though).
I am still off work, and will have been off for about nine weeks by the time I go back. After my previous two mmcs I've gone back after a week/two weeks, but this time I've been off since my dating scan - it was just too upsetting as we were in limbo for a fortnight and facing the prospect of tfmr. Also, coming so quickly after my last mc, and I'm 43, this looks like the possible end of the ttc road for me - so many issues.
After my ERPC I initially felt relieved that it was all over, but then the emotional side always takes a while to catch up I find. I would take it easy and plan for maybe at least a week off, possibly more.
Really sorry to see you here again. 