I've actually done this type of build and just finished the hilt. I used an MHSv2 5" extension as the main body and then a 3" MHSv1 extension as the switch/NeoPixel hilt-side holder. Also used an MHSv1 pommel as well. Just need the adapters. Attached is a link to the build. I chose the v2 parts so that the level wrap would be level with the MHSv1 standard OD. Really solid in the hand too. For a time I toyed with the idea of not even wrapping it. Very nice profile. The insides have been a bit difficult though. I'm glad I opted for the 5" section it's the minimum needed for the chassis (battery rests at one end, speaker and recharge ports at the other, protruding out into the pommel)

Here is what mine looks like, you can see the adapters.

https://imgur.com/gallery/ZuEwBsp