I'm wanting to install gas logs in a cabin that I don't get to stay in as often as I like. Lowes has a 100 ib tank I'd like to use. I think I could load/unload that easy enough to and I probably wouldn't have to do it that often. Anything I should watch out for?

That's how we do it. Have 3 #100 tanks. I have them filled when price hits bottom[usually mid summer].
A pallet[with bottom braces removed] flipped upside down will hold 1-2 tanks nice and secure in a truck bed.

Did you install the logs and gas line? Its in a brick fireplace. I believe you are the guy near VT, cabin is off parkway toward Hillsville from you

Didn't install[step brother has a welding supply/propane shop and did it ].

It appears fairly straightforward though. We did it while building house[lines etc to fireplace].

And yep, that's me-in Christiansburg/Riner.

I don't have a brother in law. Recommend anyone?

Find whoever does propane in Hillsville/Galax/Mt. Airy, if you buy from them they'll usually install for cheap to free.

https://www.clarkgasandoil.com/