Ha! Not a problem. Nostalgia is getting the better of me, and I think you can make a fun open project out of this.
The speed of the TIEs was not an issue in my opinion, as the TIEs are in fact supposed to be very fast, and faster than Alliance starfighters in most cases; obviously, this won't really apply to the A-Wing, and anything can outrun a TIE Bomber, but there you go.
But as far as load times go, I did wait a very long time for a load-up with the current set up. That is in fact likely in part due to hardware/software, but if you're not using FS assets, I don't think you want a .tbm that links to those assets. Besides, why do I want to scroll through the FS stuff to get to the SW stuff that I came for?