I have a 2nd hand hyper 105 litre. It took me about 3 or 4 sessions to get used to it but now it goes great. It gets planing pretty easy. Using a C3 venom 42cm.
I am 104kg so I can only use it in planing winds so I can't comment on slogging. But if you are big as me I would say use a bigger sail. In those winds I am using an 8.4m and i would go even bigger if i had a bigger sail.
But see my hypersonic post because lots of people gave detailed rigging/sailing advice. Good luck