Your estimates for Napoleonic are quite low.
Yes, you can get muskets for 500 but they are kinda rubbish quality, good ones are around 800-1200. Uniform for just 350 without making anything? Hell no. My shako cost me 150, my coat 180 and another 200 for trousers, a shirt and a waistcoat. And then you still need all the extra stuff, such as a cartridge pouch, a bayonet, fatigue cap and a backpack, to name a few.
Not trying to scare anyone off, but you need to have a good idea of what prices you are going to pay if you want to do Napoleonic reenactment.