Afternoon Everyone

Apologies for cross posting from the intro thread - just getting my head around the way things work here.

Messaging from the UK. Early doors but planning has started anyway - two couples looking to do a East-West US road trip - all for retirement and celebrate the kids fleeing the nest. Looking to do this over about 6 to 8 weeks. Intent to fly to JFK and return from LAX.
The original dream was to get a winnebago but I think I will get hacked off with the sheer enormous size - so we are pretty certain we want a super large SUV (no idea what - just needs to be super comfy) and hotel it for the most part, but might take in a motorhome for a week if we can find an all inclusive deal somewhere.
While we are looking to start in NYC, we want to do Niagra, then hit Chicago and start the Route 66. We want to do all the sights, but also hit the passes through Colorado, Las Vegas, and I want to do a lap of Lake Tahoe (initial thoughts are here for the motorhome).
So a big, significant trip probably in spring 2024 or 2025. Seems natural to do East-West - interested if anyone feels West-East is better.
Anyway - hi. Hope to glean great info and tips!
Cheers