That looks great! I
built Trinity's Triwatt a few years ago, still rocking that amp. The Trinity kits are indeed great. I've since built a Mojotone Custom 50, it was also a really well put-together kit, but no documentation except the schematic and layout diagram. I wouldn't have felt comfortable building it if I hadn't done the Trinity build previously. In fact I used some of Trinity's suggested startup and testing methodology during the build.
As for the TC15, of all the amp clips on Trinity's site, I think I like it the best (yes, even more than the Triwatt clips). I briefly owned a Ceriatone "Muchle$$" aka "Dizzy-30", which is their clone of the Matchless C-30. I believe the Trinity TC15 is also a Matchless C-30 clone, though dropped down to 15 watts instead of 30. I
really liked the EF86 channel of the Dizzy-30, so much so that I sold that amp, and replaced it with the Ceriatone Creme Brulee, which is a 15-watt version with only the EF86 channel. So in theory, should be pretty close to the EF86 side of the TC15.
I think there's some special mojo with the EF86 tube... even when run completely clean, it seems to have some special complexity that I haven't heard from any other amp. It also seems to take pedals really well, arguably even better that my Hiwatts; it feels like the pedal better integrates with the amp. I've read a lot of people complaining about EF86 tubes too-easily going microphonic, and the problem can be exasperated in a combo amp (due to increased vibration). I have a bunch of random EF86 tubes that I got in a trade a while back, none of them so far are microphonic. Ceriatone does use a rubber mount for the EF86 tube socket, in theory that should help dampen vibration. Does the Trinity TC15 have something like that?