Help with first build

[Caveman]

Hey Guys, first build here and I could use some help with the internals of my saber.

The design as it stands now:
1210512106

Cant afford to add sound now but may do further down the track, I'm planning on getting purple blade colour using a custom R/G/B Tri-Cree using the method detailed here: https://www.youtube.com/watch?v=JbHpTKiLfA4 but I'm a bit confused about the power system. Li-ion seems the best option but I live outside of the US so would have to purchase it locally, what would the advantages be in going Li-ion over 4AAA and vice-versa?
Also, would I be able to fit the electronics I need inside the 5" double female extension that I am using for the main body?

Thanks for your help, excited to start building!

[Forgetful Jedi Knight]

Li-ions will be able to properly power a multi-LED setup, where 4AAA's have a very low runtime, and can't generate the current you need to run 2 dice to make purple.

[Caveman]

Thanks for the reply,
Is there some sort of guide on internal chassis? I had planned on using a similar Li-ion setup as madcow does in this:https://youtu.be/pOpUSCsXXhk but it appears that particular chassis is no longer available, or I can't find it.

[Forgetful Jedi Knight]

Thanks for the reply,
Is there some sort of guide on internal chassis? I had planned on using a similar Li-ion setup as madcow does in this:https://youtu.be/pOpUSCsXXhk but it appears that particular chassis is no longer available, or I can't find it.

I'll take "You can't find it" for $1,000. - Look under the sound section in the store, it's with the speaker holders. ;)

[Caveman]

Ahhh wow, now I feel like an idiot!

Thanks a bunch for all your help mate :D

[ColdVizjerei]

Might I also suggest giving this internal chassis video a watch:
https://www.youtube.com/watch?v=BrA-FiAvR5U