Haha. I do the same. Order similar stuff together and install at once. Do bars when you do springs, it's worth it.
Exhaust is easy, two hangers. Intake is easy, depending what you get. I put in my k&n in about 30 minutes with a cold brew. Springs aren't bad, rears are cake, fronts a little more work just because of hard to reach hardware. Bars aren't bad, rears you could do on the ground. Front is easier if you take off the hub.