yes, you need to measure tolerances. what makes you think you have to oversize bearings? just curious. you also need to clean, clean, and clean! make sure you use the proper lubricants in the right places to insure long engine life and prevent dry start-up. i would recommend changing freeze plugs while the engine is out. you need to replace oil pump and water pump and you need to address the head (e.g.; valve stem seals, check valve guides, re-seat valves, etc.) and possibly head bolts (or studs whatever may be the case).
make sure you have the proper specs for torque and have a good set of torque wrenches which have been recently checked and tested for accuracy. have a 'clean room' for assembly for 0 dust tolerance. and clear an area for all of the parts to be placed in a way that is unobstructed. and a tip would be to videotape the tear-down if your memory is bad.
good luck!