Not too bad. I just did the timing belt the first time myself this past weekend on a 2006 Elantra. They've been replaced before, but at the shop. It was easier than I thought, and lining up the timing marks was straightforward.
I did remove the power steering pump and reservoir, but I didn't remove the engine mount.
I do have air tools, so that sped things up. I was also lucky and the harmonic balancer was easy to remove, but you may need a 2 jaw puller.
For the water pump bolts, I jacked it up a bit for clearance and was able to get to the bolts with a ratchet. And I lowered to get to the crank pulley..
I do have a pdf copy of instructions from the hma website, let me know if you're interested and I can share it with you. Something to note is the hma website did say to torque the tensioner pully to 20 ftlbs or so, but the gates kit was much higher, 38 ftlbs so thats what I tourqued the pulleys to.
If you've done them before, this should be a piece of cake.