Wow. It sounds like quite an undertaking...supplies,repairs,the drive itself...renting is a good option indeed...
Driving actually gives you freedom...starting when you want,right from your place or the pick up place, returning when you want...
Do you expect a heavier traffic over Easter?
Traffic is an unknown. It was not bad on regular weekends during Covid. I don't think it will be too bad for Easter, but it might.
When I drive to Austin of San Antonio, I have some wonder county highways I can use instead to the crowded Interstate highways. I love that. Very little traffic, especially big trucks (lorries). Some sections of highway have great curvy sections to play with.
But, Dallas to Houston, it is I-45 all the way. There aren't any good alternatives.
CD