Dude whatever you do, don't do this. This is wrong in so many ways and will end up with you and your bike being broken. If your bike miraculously doesn't break, then you'll want to break it yourself after riding all that fucked up geometry.
Also, there are more consequences to this then you would think. Geometry affects the riding characteristics of the ENTIRE bike.
-First off, warranty will be voided
-Added stress on HT through the back of it, rather than up it
-Slacked seat tube
-Higher standover height
-Higher BB will result in reduced cornering grip, and weight further back
-Worse performance on climbs, flats, technical sections, and slow speeds since it steers slower and has a higher bar height
The only good thing out of this would be your bike will handle much better on fast, straight descents.