I would suggest you need to advise us what sort of sections and ability/level you are riding at.
I didn't like my 09 280 and put it back to 250 standard. I do like the 300RR but its a much better beast than a over bored 250 I feel.
If its a std 260 then Ohlins and a PTB with map, larger front pipe helps match a softer map, to suit unless you are expert level I would say good Tyres and possobly swap from the motad to Did rims. Dump the Dunlops/X11 and fit X lights..
To be honest I liked my 260 std map with S3 front pipe.
I found front Tech forks on the std 260 ok - I'm probably 14.5 stone.
Above set up I found is great for clubman national class on rocky type going.
If doing more mud and climbs then the extra cc maybe worth it.