I think you need to take lawyer advice in this situation. H1B visa stamping is very risky ,I know some of our friends got denied and they are still in Nepal. May be your case is different because you will have AP. When we applied our green card we had same situation like yours H1b TPS no EAD used and H4 TPS EAD used. We didn’t have any problem and got a Greencard less than year. Good luck