If you have experience with tractors, you'll know what to look for.
If you don't, it's a bit late to "educate" you. Hopefully, you've been following TBN long enough to educate yourself.
The tractor should start easily. There might be some smoke initially, but that should dissipate as it warms.
The loader should easily lift the front end of the machine (including when you use the bucket dump function).
This is a 35 HP tractor (30 PTO HP) so it should pull strongly. Remember when pushing all the way down on the HST pedal has the opposite effect of what the accelerator pedal does in a car or truck.
Shifting through the ranges may be stiff...it will be "sloppy" due to the long linkages (feels like an old VW Beetle), but it should shift.
Try out the PTO (rear first...stand up and see if the machine shuts down...it should). Then the mid-PTO (ask the owner about the procedure to engage the mid-PTO).
View any maintenance records...just to see if there are any. Also, ask about the operators' manuals for both the tractor and loader (they are separate manuals).
Here's a link to the operator's manual for a little reading:
4410 Operator's Manual
You do have a day to do some research on TBN. Search for both "4410" and "4310" as there are probably more threads on the 4310, but the tractors are identical except for the engine. I suggest you make good use of that day...and good luck!