hey im kurt im 32 years old and been a big ghostbusters fan since i was a kid. Also I’m in the process of building my 1st proton pack I’ve printed all the parts up I’m trying to find it good light and sound kit so if anyone has any good recommendations I would love to hear them 
Welcome aboard!
If you are a tinkerer, and if you are 3d printing a pack Im betting you are, I would try this thread for lights/sound:
https://www.gbfans.com/forum/viewtopic.php?f=2&t=43273
If you want something prebuilt then the GBFans electronics are very solid.