/cgl/ - Cosplay & EGL

I'm thinking hard about going to a convention next month and I kinda want to try a cosplay too.
Never done either, but I already think I look like this dude from Fire Force and I imagine all I really need to do is buy the getup and shave my facial hair.

Question I've got is, are there preferred sites to find pre-made stuff like this, or at least ways to find stuff that doesn't actually look like wish garbage?
Second question is if I can actually get this in 1 month, but I feel like this one might be on the more reasonable size