This is a budget build and it comes in at just 310$. I’ve used the esk8 speed calculator and it says the top speed would be 27mph but i’m not that sure about it. If I missed anything crucial please let me know.
If you want “hella fast”, and you don’t want to waste a lot of money when it fails and streetfaces you, you’re gonna need some better stuff. Buy an actual vesc-based controller, not that ebay garbage. Get some decent trucks and a decent mount (I like calibers and @Boardnamics motor mounts), and some much, MUCH bigger batteries. You want 5000mah at a bare minimum, and probably more like 8000+. You also need decent pulleys, belts, and wheels. Plug all that into an esk8 calculator and see what you get.
Buy it right or buy it twice. Buy once, cry once. This is not a cheap hobby, at all.