PVC diameter and strength

I’m about to build a rack to hold my 4 sunfish and two sailfish. I’m trying to decide if 1.5 inch schedule 40 PVC Is strong enough to support itself and the boats or if I need 2 inch pipe. No span will be longer than 5 feet, except for the side supports that I’m hoping to leave as 10 feet each.

Does anyone have experience or thoughts on whether 1.5 inch will be strong enough? I can of course add additional side vertical posts, but the cost of the additional T-connectors is not...

PVC diameter and strength