You can just transfer the TPMS sensors from your stock wheels. There is a lot of unpainted metal under your Jeep. If there is a lot of humidity in the air the wheels will be fine unless you scrape them up having fun. If you like the Rubicon wheels just look in the classifieds, there are always take offs for sale by someone.
Buy your Jeep first. Drive it for a while, including off road, then determine how you want to modify it.