That package is a fair price, and Hook's offer is even better. I looked around for a few months, and couldn't find a great deal, so I bought a new L3700SU with FEL for around $18,000. I found 20 tractors like yours, a few years old, a few hundred hours, for 15-16K, then just decided to get the new one. I love it, but the used ones may be a better deal. I like the fact that I broke it in, and I did the 50 hour service (to the max), and there's a warranty.
Definitely get HST and FEL and R4 tires. I wish I'd bought the 4-way bucket, that's my only regret. Regarding power, more is always better, but 29hp is plenty to do anything you want. My buying advice is to get your money ready, then be patient. Look at dozens of tractors, but don't buy unless your are sure in your heart. However, when you find the right tractor at a great price, move fast. The really good deals go away tomorrow.
My final advice is this: Make a list, then get everything you want. Don't settle for the wrong tires, or no loader, or no foldable ROPS, or whatever. You will regret not getting the right tractor because you will keep and use this thing for life.
Good luck, and enjoy the hunt!