Might get more response in the whitetail forum. Be sure to specify if you will leave it up versus hang it/tear down every hunt. There is an entire industry around “mobile treestand hunting” with ultralight saddles and stands and carbon fiber sticks and one-sticking, etc to confuse you about what the best options are…but there are plenty of options at least.
Check out the lightweight stand/sticks setups from millenium, novix, hunting beast, lone wolf custom, tethrd, timber ninja, eastern woods outdoor, etc. If you’re just packing in the stand and sticks before the season and leaving it, you don’t even need an ultralight, you could pack in a full size stand and a couple of sticks and be under 20 pounds, and carry it all like a backpack. An ultralight stand is going to be pretty small, so if you’re the type who’s going to sit in it for a long time, it might feel snug, but will save you 5 to 10 pounds off a larger stand. Ultralight sticks you can get down to 1 pound per stick—might not want to leave those hanging in the woods all season though. If theft will be an issue, you could consider removing the bottom stick or two and pack that in and out with you each hunt.
I do hunt that way during our archery season, but given how much elbow room there is in that type of situation I prefer to move the set around and set up for each hunt. A saddle is lighter for that and way less cumbersome to carry around.
