As for Aircraft Realism:
I haven't tried it. Aircraft Tweaks just does some number rebalancing, the only potential issue could be if my speed and acceleration rebalances cause issues with some of Aircraft Realisms mechanics. I'd suggest trying it. If something breaks, feel free to let me know. Maybe I will investigate it further.
As for the other three Aircraft mods:
Currently no, but I believe that the Modpack I'm playing right now does actually have Lex' aircaft. Maybe I will include them in my tweaks too and in that case I might check out the other two mods as well.