Hm... I've seen a lot of people look very self-conscious when wearing a light coloured suit, since it's a bit out of the ordinary: The suit is really wearing THEM.
However, judging by your picture in the member images thread, you have exactly the sort of look that designers use as their benchmark--unique and lean--and you live in a warm climate. I'd say go for it, it'd look brilliant
The jacket could be worn alone very casually, e.g. with very simple (not obviously distressed or otherwise mutated) jeans, a black t-shirt, and quiet, but interesting shoes. I've seen this done by the Italians and French during the summer, and when it works, it REALLY works (with more than one piece of jewellery/peculiar or inappropriate shoes/overstated pants or shirt it is rather a nasty effect, however; keep it really simple and casual, and DO wear a shirt ).