This is definitely one of the easier builds to get into the endgame on a budget. It takes a bit of adjustment to get used to the playstyle if you've never played fast-moving builds, but definitely worth a try if you haven't played TR+Caustic Arrow Nova before.
My scuffed setup: https://pastebin.com/MX0Mn5VV
CrouchingTuna's Omega Gigachad 5Head Min-Maxed Setup: https://pastebin.com/KG9V2bwg