I love the NLR wheel stand 2.0 due to its stability and capability to be turned into a full cockpit down the road! Hope this helps

I think the sturdiest and cheapest cockipit is the Playseat Evolution. It is very rigid and easy to set-up. For me it did the trick for Moza R12.

Yes

Next Level Racing GT-Lite?

I think the next level racing gt racer is great

NRL GT-lite is a good budget rig but isn't the best in ridgidity

I bought a cheap rig off of Amazon and went to a local scrap yard and pulled a seta out of a Volkswagen Passat with seat rails and kept all of the adjustment. All together it was around $300, it's not the most immersive being in a seat from a sedan but it's probably going to be more comfortable than most cockpits in the lower price range.