Boy. That is an eclectic mix.
Burna Boyz aren't particularly good right now. They weren't great in the last codex, and got a points hike in the current one at the same thing that every other army in the game was getting points cuts.
Nobs have a similar problem except worse. and Killa Kans are so absurdly overcosted pointswise that it is hard to justify them.
Lootas are good. Deffkoptas are good. Trukks can be good. Battlewagons are iffy. Overcosted, but can serve a purpose.
So here is my suggestion.
Plan to run a
CAD. You need just a couple things.
That is 1,000 points. Its a good place to get started. From there, you can add a 2nd
CAD with either a Big Mek or Badrukk
Cad 2
That gets you to about 1500 points, and you've got a decent Ork army. The only thing you had to buy was 1 warboss, and either convert or buy a painboy.