The WUE schools might be smaller and would give him merit aid too. At Wyoming he’d get the top merit amount (150% of instate tuition,so about $6000/yr) plus engineering usually gets $2500 extra merit. Not sure if eagle scouts get extra merit (they do at my daughter’s school, Florida Tech). I think Montana, Montana State and other WUE schools give good merit to engineers with those scores too.
If those schools are too cold, look in the hot and humid south. It seems if you want beautiful California weather, you are either going to pay for it (Cal tech, USC) or have to go to a big school.