Re-using low-miles camshaft and lifters?

There is no reason not to. Its already broken in. One FABO poster had the same cam and lifter set in 4 different engines. Would you replace a cam in your engine because it had logged 1000 miles? Of course not. Just be careful not to nick a lobe, mark the lifters, and keep it wet with a lubricant so it wont surface rust.