Thanks!
As far as the cost of parts+material I'd say I spent between $350-400, I'll have to add it all up when all said and done. The most expensive part was getting the mounts CNC cut and of course hours of measuring, tweaking, cutting but that's labor.
For the DIY bumper kit I was thinking it'll be options like:
1. Plans only: CAD drawings and instructions
2. Side wings
3. Tire swing parts
4. All of the above