Decisions ,decisions, part of the game. Remember that you started with and named this build "pile o parts " for a reason. Have no fear you are rounding the bend. You now know whats good and know what isn't and have made up your mind how to make it all good. That in itself is a massive move forward in just a half page. When your parts are in and the rest comes back from the machine shop you'll be well on your way to assembling a finished project. How great will that be? Especially when you had just a pile of parts, not knowing the condition of any of the parts you had, and it wasn't that long ago since you started.
That being said and not to get ahead of ourselves here, have you checked the kick start lever operation,the shifting to make sure you have access to all the gears( bumping it won't give you the condition of the shifting dogs but it will let you know if they are frozen or not).
You could take the chance and not do anything but the top end, but without checking the bearings and looking for cam chain wear (or just replacing it) and primary chain stretch (or just replace it) and check the condition those nasty little roller bearings just behind the oil pump , if you can live with it . But if your a kick yourself for not doing something while you were there kind of guy, know that this is your big chance to change out both your crank gaskets, check transmission condition , give that bottom end and oil journals a good blowing out plus the stuff in the last paragraph without tearing down anything that you haven't put together yet. Nobody like to do things twice . I find that in an unknown engine, it relieves any doubt of success and offers years of uninterrupted enjoyment . Nobody needs a new project that was your last project. I might, but you don't. Just sayin', you know that life is full of choices and decisions and like like the knight in Indiana Jones said"you must choose wisely".Great job , good progress, and it should always be fun.
