For wing sizes and what it sounds like your expectations are 13-1700 cm2. Wings at the bottom of the range will require just a smidge more speed at takeoff but be less likely to be too lifty in gusts. There are a large variety of foils available and generally stuff from the last 2-3 years is solid. There's been a trend towards more efficient "mid-aspect" wings which take advantage of slightly more slippery shapes to create lift instead of simply thick, large foils.
The I76 mentioned above was one of the first wings to have both a decent amount of area and better shape; and helped a lot of people get going. A few of my friends also enjoyed the i84 which is a bit slower but more docile and flies a little earlier. imho, the biggest thing to consider with the SS Infinities is that there really isn't an upgrade path and you'd need to sell it if you decided to move to a bit more evolved wing set or better bits. As well, (again, my opinion based on accounts I've seen and read), the engineering is a bit dated so you'll have to mind the health of your screws, especially fuse to mast, to make sure everything remains intact.
Just a warning - 95% of us here all started with the notion, "I'll foil when the wind is light and..."

With experience, you'll find your wind range on a given set of gear keeps on increasing and you'll find yourself choosing to foil more and more especially if your winds are gusty or variable.