I sure had fun with my 170 in the 10 days that I had it in the water. Can't wait for April to roll around when I'll put her back in the water.
Since I'm also a novice on the boat, the only advise I can give you is to NOT jam cleat the sheets when the wind is gusty if you're on a beat or reaching. Instead, hold the sheets in your hand (especially the mainsail) so that you can "dump" any extra wind from a strong gust. To not follow that advise is to invite a "knock down". I don't know how shallow the river is that you will be sailing on, but if you're not going "shallow", it's a good idea to lock the center board down.
That will help prevent a knockdown and if it does happen to you, it makes it about 1000% easier to "right" the boat. In another posting here, I wrote about some guys that didn't have the center board locked down and when they went over, it made it a lot harder for them to right the boat. In fact, they couldn't do it themselves. The boat had to be towed to shore laying on its side and in shallow water next to the dock, several extra "hands" helped right the boat.