The generator I use is 99 lbs so it's an easy 2 person lift . By myself I use some harbor freight ramps https://www.harborfreight.com/1200-lb-capacity-convertible-aluminum-loading-ramp-94057.html when the wife is watching, but I can manage it without if she isn't .
You will also need a NEMA L14-30 Twist Lock Male Plug to NEMA 14-50 Female Plug. Like this : https://a.co/d/2rslpKF and your Mobile connector but that's it . As far as charging speed goes I was using Propane and it would handle 18 amps (4kw) , I believe it will go to 21 (5KW) on gasoline...
Here is my vote - https://a.co/d/5Y8GKA6 For the money , weight and versatility this is my go to remote charging solution - $800, < 100lbs and 5000 watts on gas . Used it a bunch when dry camping at the lake - Run the Rv a/c off the Cybertruck after night time generator restrictions then...
I recommend this one , it goes over the headrests and is super secure , very easy to take in and out . With a mesh section so the a/c can blow thru . My 2 50lb dogs love it .
https://a.co/d/iqUPC59
Gritted Cybe
My beast had a rattle that duplicates exactly the way you describe . It took 3 visits to figure out it was coming from the driver side ac registers . They were replaced and it solved the problem .