The FSX DUAL-GA (Works for any sim, including P3D) from Flight Sounds is back in stock and has been ordered! This allows not only real world headsets, but also PTT and Intercom features for the simulator! Via another cable it can also pipe audio right into a go pro, so that is a future bonus!
Ah yes, it is coming back to me! I bought Prepar3D v4.5 and will use that instead of FSX. Then I picked up PMDG 737NGXu. I am in the process of obtaining my ORBX scenery previously bought on the now out of business Flight Sim Store and in the mean time added their new stuff, base pack, vectors, socal/norcal scenery and some more airports. I updated FSUIPC to v5 and downloaded SimA again. May see if REX is still necessary or not. Once UPS finds my lost computer order, I’ll build the new sim pc and start getting computer IDs out to needed developers including Project Magenta incase I want to go back to it. The other two PCs are pretty much ready, may just need better GPUs.