On a scale of 1-10 I'd rate this a 4. All your doing is removing and replacing. Take plenty of pics and notes. Trust me on this. Use all tools available to your advantage. I did 99% of this myself. My son helped with the removal of the exhaust manifold to cat nuts.
Don't attempt this if:
Your mechanical skills are limited to oil changes and filters.
This is your daily driver and it's sunday afternoon.
Don't have the tools.
Timing belt kit from NAPA #2522941 $124.88
Water pump NAPA #41013 $53.29
Serp belt tensioner NAPA #38188 $35.97
Serp belt $19.99
Serp belt idler pulley bearing $4.99
These parts I replaced for my own reasons
P-side motor mount Checker auto #7153224 $69.01
Before cat O2 sensor Autozone #15717 $48.99
After cat 02 sensor Autozone #15717 $48.99
Autozone computer had 15718 for one of the sensors but was not = to what I had. The 15717 did. The plugs were the same, only difference was the length of wire.