A lot of good ideas here. I'm not sure I can really contribute anything new. Regarding scissors to cut: Yes, they work but after trying a rotary cutter for the first time shortly after Christmas, I can say for certain that rotary cutters are like magic. My cutting and piecing accuracy improved dramatically just by using a rotary cutter.
I have trouble standing for long periods too due to melanoma that first made itself known on the bottom of my left foot. The best idea I can give is the low table, preferably tilted, so you can reach better. I will pray for a speedy recovery for you.
Rodney