Anti Vandal switches are what are typically used in sabers these days. Plus most of them light up, people tend to like that. The NB needs a momentary switch (NOT A LATCHING SWITCH) to operate.
You also might be better off using the 2AA battery holder and then using a 14500 (AA sized battery) and a dummy cell. That will give you the proper voltage you need to successfully run the NB card. If you want a longer run time, you would try to find a place in Brazil that sells something similar to the 18650 Li-ion cell sold here in the store. If you use the pre-wired solution (MWS) that should minimize the amount of soldering you would need to do.
The NB works on a "direct drive" principle - the NB does not have a LED driver on it. Once you decide on switches and stuff, I'll look over your revised list.
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