your cam bearings should be fine, just inspect them for wear.
if you are going to change the bearings, either buy 2 or 3 sets of bearings and the tool. because i dont know anyone who was happy with their first cam bearing install. it took me 4 times of screwing it up to make me say "skrew this im taking it to the shop" gotta be by far the wors part of building a engine. IMO!
if you decide to take it to a shop, be prepared to rip the lowering rotating assembly out.