Howdy and welcome to the forum.
I suggest you immediately stop where you are at, and consider that you'll be doing double or triple work if you assemble the used parts.
AT A MINIMUM, I suggest removing, cleaning, and re-packing the wheel bearings. Also, if the isolastic rubber donut inserts are worn, dry, sagged, and/or cracked, replace them with new inserts and PTFE washers (the big brown ones).
On the brakes, pull out the pucks (a bit of a fiddle) and replace the caliper o-rings.
...and that's just the rolling chassis!
Thanx for posting photos; everyone else that reviews this section appreciates it, even if nobody else acknowledges it.
