ARGHHHHHH, I hate that, I was typing, and then all of a sudden the typing lagged, then it acts like I highlighted all the text, and naturally I type over the highlighted text. I did not TOUCH my mouse, or hit any alt, ctrl, etc keys, GRRRRR! Starting over, and now I'm mad........
Ok, first, I'm confused. You want the bike to be more flickable, yet one of your ideas is to go to a 190 on the back? It is pretty widely known that 190s for anything less than a 900 (still questionable) is more or less for show. Putting a 190 on the back WILL decrease the flickability, maybe just a little, most likely a LOT. Many bikes perform better with 180s. Nevermind the fact that changing a bike's geometry by changing tire sizes in the front or back can really screw up your bikes handling unless you are a pro tuner who has experience with bike setups, like a race mechanic or something.
All that said, I have D207 GPs on my bike that I bought a few weeks ago. I guess my thoughts on this would be where do you live? Is it warm almost all the time? Something I have noticed about these tires the short time I have been riding on them, is they do not warm up very easily. It has been pretty cold around here in TX the past few weeks and I have had real problems with traction. In as high as 50-60 degree weather the rear tire will spin instead of lofting the front wheel up, in full throttle 1st and 2nd gear acceleration. I guess if it's going to be warm where you ride mostly, or you allow appropriate tire warm up time when hitting the twisties, then you should be ok. Just my 2 cents from my short experience with the GP tires.
1997 Suzuki GSX-R 750
2000 Mitsubishi Eclipse GT