My speedo reads about 4-6 mph high at 70, I'm on 31s. Like others have stated, you have arguably one of the most capable box stock vehicles ever made. Tummy tucks are fantastic (I wouldn't mind doing it to mine) but they get real pricey real quick. Mild suspension lifts will give you a little more room in the wheel wells after the added weight of the bumpers. Having just bought new tires you definitely would want to keep it small. I have 2 inch puck spacers and shocks to match, did it for under 200 bucks with a rebate, seems to work good. I second the oil pan skid, mine's dented pretty bad from crossing a tree. Let me know what you get and how you like it if you go that route. Pick up a cheap air compressor to air down and a tow strap. I will say, by far the best off road gadget I ever purchased is front swaybar disconnects. Makes an absolute world of a difference in terms of ride quality off road with the added bonus of 3-5 extra inches of suspension travel. They really do make the world of difference, if I could only suggest one modification that would be it. Best thing is, you can remove them for free (just requires tools) or even make your own quick disconnects using the stock links if you stay at stock height. I can gig up a thread if you'd like. If you decide to buy them, don't go cheap (ask me how I know....) JKS makes a solid product.
You can get caught up in mods all day long and spend a crapload of money getting it ready to go when in reality its ready right now. Go out there and see what the Jeep will do (they run the 'Con stock, its a beast) and learn what kind of terrain you enjoy driving and then you can gauge what might make your travels easier. Travel through dusty conditions often? A snorkel might be in your future. Cruise remote backroads at night often? Explore auxiliary lighting. Favorite fishing hole at the end of a boulder strewn road? Rock sliders and extra skids may be a quality investment. A winch is good insurance if you plan on going deep in the sticks without a buddy. If its mild wheeling, save the money for gas. Better yet, invest that 300 bucks you'd spend that next mod and invest it in an off road driving class. Driver experience will send an $800 Cherokee scrambling up boulders that leave $60k v8 ton swapped rock buggies scratching their heads. A driving class could be the difference between relying on a winch and never touching one. Use money you would spend on mods to go on a Jeep Jamboree. Do some sweet wheeling, meet some cool people and gain that experience all at once. Modding a vehicle really is half the fun, but don't let mods or the lack thereof keeping you from getting out there.