just get a good all terrain like BFG. I drive on the sand a lot and they work fine. unless you are going to really root around in the soft stuff, you don't need an aggressive tread. the one thing you are really going to want to watch is keeping the underside clean. sand and salt kills vehicles.
Thanks for the info everyone . Yea a ram 1500 is like 5,500 lbs. can't wait to hit up some spots starting April 1 when we are allowed to off road again Nothing like cruising down the beach finding your own peak