Thanks for the replies so far guys and gals!
I weigh just about 11 stone without leathers on, so not that much really. Think I might go for the progressives with 10w oil by the sounds of it... could always switch to 15w (or 12.5 from a mix?) if it's still too soft but I'm still not 100% sure on this (few conflicts of opinion it seems!). Gives me a fair bit of flexibility then without it being too hard for normal use (as I say, most of the time is spent on the bumpy A and B roads, not a nice flat track!).
Northwind you are the one who has inspired me to upgrade the suspension

. I assume you are the same one from OcUK?