I am currently in the process of building my first saber. I originally was following Lord Dottore Matto's instructions on building a standard saber without sound but now I want to add sound.

I currently have these as my electronics:

Rebel Star LED & MHS Heatsink Module (Deep Red)
BuckPuck 700mA 4-wire
Push on/push off switch with black button (Latching)
4AAA Battery Holder with JST connector

I want to add the Nano Biscotte to this setup but I have read on the forums that I would run into some problems.

1. I would need a resistor instead of a buckpuck.
2. I would need a single cell 18650 Lithium battery instead of the 4 AAA batteries.
3. I would need a momentary switch instead of the latching one I have.

This is my updated parts list for the changes I would need to make to my current electronics as well as the new parts geared for a saber with sound:

Nano Biscotte Sound Module V2
MHS speaker mount V6 - For 28mm Speakers
18650 Single Cell Holder
TrustFire Protected 3.7V 2400mAh 18650 Lithium Battery (2-pack) (I'm opting for non rechargeable because I don't have a hole for a recharge port.)
Premium 28mm Speaker
SPST Momentary switch with black button

My questions are:

1. What resistor would I need and how many of them?
2. Is there a way I can make the momentary switch act like a latching switch? (I don't want to keep holding the button down while I'm swinging away.)
3. Are these all of the components I will need for an led saber with sound setup? (Not talking about wire/jst connectors/heatshrink I can take care of that as needed.)

Thank you.