Well, there are alot of threads in here on the PT-109 & one guy is/was working on PT-117 with alot of pics. He is also using the White Ensign Models PE set.
My build is progressing slowly as I still have the topside to do. As far as painting goes, that's still a big debate but, WEM has item# WEMCC US 29, U.S. Navy WWII tropical Green which is pretty close to what was used in the Pacific Theatre.
I highly recommend Al Ross & John Lambert's "Allied Coastal Forces" vol.2 as a reference, T. Garth Connolly's PT Boats in Action & along with his website http://www.ptboatworld.com/models.htm
Another site I can't forget (I'd be swimmin' with the fishes if I did!) is http://www.coastalforcesplans.com/index.html
You'll find alot of info on those sites. Any questions, feel free to ask away. Remember, the only stupid question is the one not asked