full tune-up... fluid changes (oil, tranny, coolant, brakes), new plugs, check/replace all belts for dry-rot/cracks (if timing belt goes, your engine is toast), new gaskets (valve cover, cct, cam caps... they might be ok, but will probably begin to fail soon and give you that common burning oil smell coming through the vents).
2 years is a while to sit, so all of the above should give it some fresh blood, fresh spark and good seals.
i'd put the timing belt/water pump job towards the top of the list. it's not cheap but it's not something you want to gamble with either. if you can handle doing it yourself, then you'll save a ton of $ on labor. order a kit from blauparts. while that work is being done, it's usually the best time to do the other gaskets i mentioned and a coolant flush.
also, since you had water damage, you should check all the possible ingress areas to make sure it doesn't happen again. aside from sunroof drains, check the seal around the fan behind the cabin air filter and the drain underneath the battery. the seal around the fan will usually cause leaks on into the passenger side and the drain under the battery will cause leaks on the driver side (ccm) if it gets clogged.