FFS...
You are headed in a really good direction with the Zone combo kit, it should allow you to lift the Jeep without needing a DC driveshaft and transfer case drop. Your stock control arms will be great for what you want to do, but if the bushings are worn out I'd replace them with new factory replacement units over cheap aftermarket "upgrades". If you end up with driveline vibrations after you lift it you can add washers under the transfer case skid to drop the output of the transfer case until the vibes go away.
An adjustable track bar would also be a good improvement over the stock but isn't necessarily required. You can also drill another hole in the bracket to move the axle over with the stock track bar (likely described in the lift kit instructions). If your stock unit is worn out go with Currie, JKS, or metalcloak.
The only other thing you might look into is if someone is willing to change out the shocks in the kit to the much loved Rancho 5000x shocks instead of the ones that come in the kit, but I believe the zone shocks are OK. I have no experience with them but I do with the ranchos. Definitely get ranchos for less lift than what you have as they tend to run long if you go that route.
Getting the sway bar disconnects isn't a bad idea, they aren't that much more money and you'll always have them if you do end up deciding to go offroad with your kid. These Jeeps have a way of talking you into things you wouldn't think you'd do otherwise.
Something else of note, once you get 33" tires the tire shop is going to send you home with them grossly overinflated. Drop the pressure when you get home to somewhere around 26psi and the ride will be much better.
Another thing. If you want to see how much suspension travel you use on the road wrap a zip tie around the shock shaft, push it down to the body of the shock and do a week of normal driving. I can easily use 5" of suspension travel on the road which is more than it had from the factory. Personally I've driven lowered vehicles and it sucks riding around on the bumpstops, having less travel that what a vehicle came with from the factory (namely a truck or 4 wheel drive) just isn't acceptable to me any more. I want the best ride possible out of my Jeep within reason.