A lot of geometry to consider, right XB33?
LOL.
We just went thru this on my GSXR fork swap. Rake and trail to be altered by fork length and nasty difference of fork tube offset in the triple tree.
All can be remedied, but what looks to be an easy swap, could be costly to fine tune.
Buy a new set of trees with proper offset, and your halfway there. Unless you are prepared to alter the rearend to accommodate the corrected fork angle...the tree swap is the easiest, yet not 'cheap'.
With money and skill, anything can be overcome.
Goodluck!