If this is your first jeep, welcome!
If you didn't get the LED lights, I highly suggest that first. Before the JLU we used a JKU on the CoolToysTV series and the LED lighting was a major upgrade.
We also did all of the markers in smoked LED just because I liked the look better. The taillights and reverse also LED for better viewing. The JLU has all of that from the factory. Not as good as aftermarket but better than standard stock.
I am a cheap a$$ so I don't do tires/suspension until the first set are showing threads, but that is on the list. We've already run through four plus feet of snow and run several miles of volcano crawl.
My wifes favorite upgrade is the table on the back door - photo below.
Don't forget the wave....