Welcome. I'm new to KLR also, but I've learned a lot since I got mine in late October. Mine is 2003 with 1287 miles original. Dropped once (not moving), and I'm "restoring it" as we speak. Since I'm way up north (45th parallel), I have time till April.
It looks to me you will be using this thing mostly off road (14T front sprocket). I would look into IMS gas tank, since it will protect the rad much better, and provide more range. One other mod I would suggest, is inserting some kind of heat shield between the header, and the coolant tank. I decided to use self adhesive aluminum foil, with some kind of spongy material as the backing. I used it on several vehicles (Jeeps), and it provides great insulation against heat. It can be found in HVAC sections of any hardware store (cheap). One can cut it with scissors, and even double it up if necessary. Melted nipple in the middle of nowhere could be a BIG problem. Flushing the rad (cooling system), and replacing the thick antifreeze mix (if still original) with distilled water, 20% antifreeze (light mix), and some "water wetter" provides better cooling. Manual fan switch (that you did), is a great mod.
Another thing you need is the bike lift (if you are DIY kind). I have two bikes and neither came with center stand (my other one is BMW R1200C). Bikes don't like to be parked for a long time on the side stand. In the case of BMW there are two issues,......left cylinder filling with oil (boxer engine), and left fork seal sweating/leaking. With KLR, only the fork is the problem. This happens after MANY moons being left on the side stand (but it happens). I have the front wheel in the choke (KLR is parked vertical), and I am shopping for the lift (so I can easily remove rear wheel, chain, sprocket). I purchased the center stand for BMW long time ago (first thing I purchased for that bike). It's not a permanent stand (it doesn't stay on the bike), but as soon as I come home, I put the bike on it.
I would not put the permanent stand on the KLR, because I've learned that the footpeg bolts are weak, and that's where permanent center stand would bolt to.
Anyway,......enjoy this thing for what it is. It will never be a "dirt bike", and it will never be a fast/comfortable sport tourer on the interstate (I came off BMW K1200RS, which is made for that, KLR isn't). Ask it to do what it's made for, and it will do it with ease, and last a long time. For me personally, the big plus on KLR IS the "old technology". I'm getting older by the minute, and I can wrench on these with my eyes closed. "New technology" (as wonderful as some "innovations" are) depends too much on electronics/sensors and crap that can go wrong when you least expect it.