As I have already sold my -6 due to financial straights, I'd probably consider buying a clean example of a used -6, when I am more solvent.... possibly an '07 or later.
Depending on how long that takes, my range of choices will broaden. Adding less than 200 cc and a bit more oomph down low isn't a bad thing; if the price for that was similar to the -6's price, I'd consider it.
I like the idea of the detuned motor, due to the longevity that will result in. The bearings, clutch, crank, rods, tranny are all designed for a higher HP application.... backing that off by 20% (or whatever the difference in power really amounts to from the FZ1 'down' to the FZ8) has a big, big impact on motor 'life'.
Inverted forks are a good thing, if the design still allows for relatively easy modification (new springs, altered damping) I wouldn't be too concerned ... it'd be nicer to have the 'good' bits right out of the box, but the price for that is usually too steep to make it worthwhile.
If the insurance is more reasonable than what a liter bike will wallop you for, and the driveline can take whatever you can dish out.... overall that's not a bad thing. Sure did work for Suzuki with the Katana series for a very, very long time.....