Judging by the numbers (SA/D 16.44, D/L 280, B/D 41%) this wouldn't appear to be terribly overpowered or terribly 'tippy'... however it's likely a soft chined, roundish section that may well heel initially before stiffening up on the ballast.
It's also a fairly balanced sailplan for the day.. J is 13 and E is 12.5, so there's a bit of power in the main too, meaning if you're a bit nervous about tenderness she'll probably move alright with a 110-120% headsail as you feel your way at the beginning. Do you have a good inventory? or just a 150 on a furler? Hopefully not the latter as that will limit the effectiveness of using less headsail, esp when trying to go upwind.
Some boats can cope quite well with some feathering into the wind, esp in puffs; this takes some practice as it's a fine line between pinching off some heel, and stalling the boat by luffing too high. Whether or not the S2 is one of those, experience will tell. At 9800 lbs she'll have some 'Mo(mentum)' But starting with a modest sailplan until you get comfortable is probably the way to go.
Caveat: I've not sailed one of these so.....