The stock looks very good - maybe refinished.  With better photos, we may be able to be more helpful.  In the meantime, I will be happy to say that if the stock is original and even is refinished carefully, it probably is worth the whole that you've invested so far. The rest of the parts (less the sight) are the icing on your cake.  I think you've done well, grasshopper.

The serial number is out of the range most of us think of as "correct", but the subject is always not certain.  In Mallory's book, 2nd Edition, he lists a few carbines beyond "the range" and, as I recall, one was even beyond 200,000.  Regardless, if all the parts are married, the stock's value is the same whether with a proper number or not.  It only needs to be "original" which brings us back to the subjective conversation.