I think that would be the better option. A drifting steering rack is designed to handle the forces applied at high steering angles while I doubt the standard one would be as high quality.
To me an angle kit seems like a better solution here. Maybe you could get away with just removing the bumpers, but if an angle kit is in the cards given your budget, you might as well do it right.
It's always worth considering where you feel it makes sense to cut corners vs when to do things right, and that's gonna depend a lot on how tight money is and whether there are other places you know you're gonna really have to spend.
Eh, in this case they’re pretty necessary. But many times things are only there because some regulation requires it, not a technical reason.
Example, air dams on trucks and SUVs are only there to help with fuel economy regulations. Taking them off gives you more ground clearance and approach angle for off roading.