Since you are ordering a JLR, here's some thoughts based on my experience with the 2020 JLR that was ordered in December
Answers to the questions:
•What are your impressions so far bone stock?
Though only lasting 800 miles before being lifted, the Jeep was a blast to drive, including some DD (~50 miles each way). The lift was a 3.5" RK lift T-Rex (i.e., mid arm in the front, long arm in the back). The JLR drives really nice.
•What mods do you think are absolutely necessary if any for a stock Rubicon for driving habits I mentioned above?
For off road and rock crawling, along with highway DD, this is my list of recommended mods
RK T-Rex Lift
Steer Smart steering
Artec Aluminum belly skids (custom made from a 4-door kit)
Front and Rear diff skid
Artec Truss system
Locked Off Road Hydr bump stops
Dirty Life bead locks with 37's
Artec front and rear bumpers
Rusty's tire carrier.
•What are your personal thoughts from experience on the factory aux switches and steel bumpers?
Ordered the factory aux switches, not used yet.
Skip the steel bumpers and get a good set aftermarket bumpers (e.g., Artec)
•What winch recommendations do you have? Not going to be used heavily just there for those just in case scenarios.
Buy good stuff so you only have to buy stuff once.
When you need a winch, it cannot fail.
A warranty is useless when you are broke on the trail.
Recommend Warn Zeon 10S winch.
Creeker's build is awesome! Also, whenever I think I am going a little overboard I just look at Creeker's build and it makes me think mine's a budget build!