I can't recall comment as to your clothing plan, as everyone is different (I would die - 50+ degrees is shorts weather for me). I will say that you should (if you haven't already) look into mineral sunscreens (zinc or titanium oxide). They tend to leave you with that slightly ghosty/sparkly look (Twilight vampire, perhaps?), but in my experience, don't lose effectiveness over the course of a day (except where abraded off through hand washing or sweat wiping). My wife is very light skinned, and even she gets by with one application in the morning before leaving the room, and can be out all day with no change in skin color at all (no burn, no tan, nothing). I imagine with a repeat application, you could be totally ok. We use Banana Boat Baby, because it is relatively inexpensive and easy to find (and I have confirmed I have no allergic reaction as I have to chemical sunscreens), but there are a number of other brands that offer higher percentages of minerals that may be even more effective.