my reading is that OP has the parts in hand.
@ForrestTheGump: yes, that should work. chances are you’ve got better bits though.
(snap a pick of your stash)
the collection base for your CLS is probably a more appropriate size. What container to do ethanol wash in? - #16 by cyclopath shows an old MK III terp lid on a modified keg, which is what I used as the base for my buchner.