Looks good. Just a couple of comments:
Nice touch to snubber the primary - but make sure the caps are rated for the PEAK value! Probably easier to snubber at the secondary though, you get some free attenuation from the transformer.
What current should this provide? 2 x 10kuF seems excessive and will result in quite high-and-short charge current pulses with lots of harmonics.
In the regulator you use the pot as a rheostat. That's fine but I would connect the bottom pin to the wiper. That way, if the wiper fails, it will not be open.
jan