Welcome. Nice gun, carry one myself from time to time. But, the only gun I have with a light on it is my SKS rifle which I use on hogs. It's a green laser, great, but not what you're looking for I reckon. There are weapon lights all over the net, google works.
Oh, if you don't find a holster you like, a very simple belt slide that will work with multiple handguns should work for your purposes and it's cheap and comfortable, called an Allen belt slide and it's only about 14 bucks from Academy. Fits my revolvers and the TH9c. I can't recall the size, but I suspect it's a large as I originally bought it for my Ruger KP90DC, not a really small gun. It carries that gun comfortably, too.
Welcome from Va.
The TH9c is just new enough that they are not yet listed much , so I order things for the PT809c ( TH9c replaced the 809c ) instead of the TH9c and works great
Craft Holsters,com is one I like for OWB , they list the TH9c