Congratulations! To go from lurker to poster to buyer of a 34 shows courage and a future as Forums poster.. Hopefully you'll find someone to help with looking in Saratoga Springs to reduce potential surprises to manageable list...
As one who drove over 2,000 miles to pick up used trailer purchased sight unseen, here is my list of stuff to be ready for or take along:
1. The big toolbox, plus a few extra power tools (drill, edge grinder etc) if you have them, along with a long extension cord..
2. Stuff for living in trailer on way home, including pillow, linens or sleeping bag and towels and paper towels and TP, etc. Good supply of beer would help.
3. Campground directory and cell phone with proper chargers.
4. Perhaps an extra unmounted tire, since that is size not everyone stocks and you may be stuck after local tire shop closes... With 6 potentially old ST tires, statistically one is likely to fail on ride home..
5. All the required hitch items, or confirmation they are part of the purchase. Spring bars, sway control, wiring jumpers, and a 12V
DVM or test light are handy... Throw in a few extra fuses and light bulbs for truck and trailer (1156/1157 are popular items..)
6. If you plan to use reverse along the trip, an inexpensive pair of FRS hand-held radios or walkie talkies are a great way to gain an extra pair of eyes to help avoid body damage before getting unit home..
7. Maybe some 2x8 leveling boards or blocks and chocks to hold unit in place and level when camped, or if you have to unhook it...
I'd have brake controller installed before you leave, and keep calibration and adjustment instructions in glove compartment for use when you get there..