like the build-also glad to see i,m not alone in the 'fill the workshop up to the roof' school of thought.
when we were kids,one of the local racers used cub motors-we saw just about every trick he knew,and learned a few things.one that stuck with us was his pushrods-he used the stock ends and a very thin wall aluminium tube,before he assembled them he inserted timber dowels down the tubes to give rigidty-we,d never seen wood in such a high revving engine.sounds whacky but he won lots of club races.
all that work saved maybe 4 grams of weight,ANY advantage he had over the pack was a winning move as far as he was concerned.
best of luck with your bike,like all the one off stuff.