If you stay at or under that 7500lb GVWR and around a 30ft long trailer you will be fine. I have been towing my 7200lb GVWR trailer with 2 different F150 4x4 ecos for years now and over 40k miles without any issue at all and all within all specs of the truck including gvwr and payload. You say you're looking at a 2wd truck that will put you near the 2000lb payload capacity with a properly equipped half ton. Mine has 1700 and change with the 4x4 crew long bed. It just all depends on what all you have in the truck and passengers too. You could easily be close to max payload on a 3/4 ton diesel also as some of the loaded f250s I have seen have a 1700lb payload the same as my 1/2 ton. My 150's hitch is rated for 1320lbs of hitch weight when using a WDH which is a necessity. Find the trailer 1st then buy the truck that will fit you and your trailers needs.