I agree with SkyRider regarding replacing seals and bearings with new.
If you replace with used you have no way of knowing what the life expectency is. Do you really want to go through a replacement in say 2,000 miles?
I see you did go with the new parts so you should be good ta go now!
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)