I'm going to clarify my OP a little. I was disappointed in the loot - the POI was scary and had me cowering in fear (and fun) several times through the two-day run! I play dead-is-dead so this POI was very difficult, and subsequently, very fun!
I just completed a level 2 house (something 4 as I recall) on a new run-through that had more book shelves in the house then this book store HQ. If you don't want to have a ton of books in it anymore, please turn it into a department store HQ, instead of a bookstore HQ.
Then the quest rewards for this level 5 were way worse, as I mentioned, than level 3s and 4s that I'd been getting. I wish I had written down the 4 items I had to choose from but I didn't. They weren't "oh, that's good but I already have it" - they were "Wow, that's crap!"
TL;DR; I loved the quest itself and the tier 5s in Wastelands are no joke. If you want to have the most fun in this game, switch to dead-is-dead and go tackle a tier 5 POI! It adds a whole new dimension!