EZ Pass for long road trip for NYC

I'm driving a long distance in the coming weeks from NYC to Dallas (bring some big items to family). Anyway, I have the rental for 4 days and the toll add-on is $26 per day. Over $100.

I don't drive normally as I live in Manhattan, so not familiar with EZ Pass, but if I'm reading correctly, I can buy a temporary EZ pass to attach to the car rental?

Anyone familiar with this? it says CVS in Union Square sells the temporary EZ pass. Is this more complicated than going with the daily fees from the rental company? Should I just pay tolls at toll booth during my road trip and/o pay by mail and not get anything (temporary or the rental option)?

My trip goes through PA, Virginia, Tennessee, Arkansas then Texas. I don't think I'll be going through any tolls, but not sure.

Open to any advice.