"We want to keep this total lot of tools under 100 pounds and no more than 2, possible 3 boxes to store them in."
The only sockets I've actually used on my RV is the one for the anode rod on the water heater and the one for the hitch ball nut. More, you really don't need if you bring along a tire tool or tire T. I've never used the tire T except to check the lugs after we got the camper and after we got new tires.
Needle nose pliers come in real handy, but not for the RV. They are more handy for removing fish hooks from the bellies of fish when they swallow them!
100 pounds! Wow! Way too much. Think "simple" and multi use items. Down size that 100 pounds to about 10 pounds.