From the look of those singles you were smashing you’ll love it!
The ’12 is a better bike than the 2010 hands down.
Yeh, I had a 450 before this but for the riding your doing, only the fire trails will be slow compared to the 450, you’ll smash most 450s in the tight stuff (depending on rider quality of course!) and still get up the hills they get up but you’ll be less knackered.
I did 110km of singles on saturday, due to lack of time on the bike (Barmah Forrest virus, thanks to Detours Boris for that one!!) I was knackered but I’d have pulled out half way through if I’d been flapping off the back of the 450.