It's not a job that requires a lot of Skill as much as it does nimble fingers, assortment of basic tools (short and deep sockets for the 1/4 drive ratchet, metric wrenches and metric gear wrenches (if at all possible). There's a number of bolts in tight places and having one of those pen magnets would be great because you may drop something. You'll need your usual 5/8 spark plug socket though I prefer a deep 5/8 and no rubber inside of it (It gets stuck on the plug and you have to fight to get it out.
Getting to the backside of the distributor is not a lot of fun and definitely note your firing order before starting since they're not in a 123 and 456 order on the cap.
I'd recomend a new intake PLENUM gasket, it's a metal gasket that goes between the intake plenum (what you called the air handler) and the intake manifold which is what th plenum bolts to.
If you don't have a 1/4 electric or air operated ratchet then this would make life alot easier getting to some of these PITA fasteners. Lowes sells an electric one for $20-50 bucks depending on if it's on sale or not.
If you're going to start on this tonight then I can be here until about 10:30 EST but I won't be back tomorrow until after 6pm EST.
Let me know.