There are Ebay sellers that sell them & are quicker than Jeff. If you want to wait, his stuff is top notch!!!
Have two of his sabers & was going to order some tubing off of him.

Ret, i'd go for the quick change LED system. Better than discs (even with a K2) & only takes a minute tops.

As for the cshroud, you could make one with an off cut from a Pecision engineers workshop.
Get to know the guys in your local workshop & they'll do all the fiddly little jobs with the tubing!