First saber, basic components to experiment with electronics

[Ben StarKiller]

I am new to the custom saber scene and it is just amazing how many custom saber products are out there. I have had an Obi Wan ROTS costume for a few years now and only a crappy extendable non-light up saber. I'm thinking of joining the Rebel Legion in my area and want to upgrade my saber. I'm starting off small, then going to go for an Obi Wan Kenobi ROTS replica or extravagant custom. The sound cards are pricey and I am a hobby PCB and arduino programmer so plan to build the soundcard myself with the help of some DIY libraries (LightsaberOS, FX-SaberOS, USaber).

Can you experienced saber builders look over this simple build to see if I am missing or overlooking something? I have a drill and tap set for the covertec and blade set screw, do I only need one and what size is common? How much space do I have for the electronics?

Main
Hilt style 5 (2x recessed 16mm AV holes)
Pommel style 5
MPS insert 1 (+ clip)
Blade holder style 4
36" battle blade ""TCSS" style
Black machined covertec clip
(Is there a blank heatsink module available for using other led?)

Chassis (Eventually want to get/make something similar to this or this)
MHS speaker mount v5
Chassis disc for PC/18650
2x 3/16" brass tube (cut to size)
2x 4-40 threaded (cut to size)
4-40 nuts
2.1mm power jack

Electronics (For basic lights - sound to be added at later date)
18650 battery
28mm bass speaker
4x JST sets
1A 3.7V LED driver (later: Teensy or Nano+DFPlayer, MPU6050, NMOS)
2x 16mm momentary AV switches


My main concern is fitting all the electronics in it. Is there space within the pommel for a recharge port?