Help with the Oneup V2 QU BD 3D printer

After ordering my printer, i realized i'd made a huge mistake- i ordered the Oneup instead of the Twoup. How i managed to screw that up.. well, it was late. Im not particularly distraught, the only difference is the print dimensions.

Anyhoo, QUBD sells a $80 kit to turn your oneup into a twoup (all it does is extend the printer outwards)

I was wondering if I could just get longer pipes and a bigger bed and whatnot, and just duct-tape-and-zip-tie-DIY?

Does anyone have experience with these printers and can help me out? Im really looking for a way to upgrade my printer's build volume for cheap. The printer will ship as a fully-diy-kit, so there's room for changes if i see it fit to make them..

thanks