I got the new flyback installed today, and so far, all is looking good.

No bad surprises when I fired it up, and it has been running a little more than an hour with hardly any heat at all. There is a slight warmth, but feels like it should be normal. Nothing compared to the heat the old flyback was putting out! Currents at the HO tube and HV regulator are all within spec and steady. Focus voltage is good, too.
Can't say much for the picture right now. The crt this thing is currently connected to is very weak and has severe cataracts. The raster fills the screen and the color is working, so that's all I can say for the picture.
As of now, this chassis still has all of the original lytics in it. I have been debating whether or not to install the new ones. I probably will.
The cabinet is ready for stain, so, i'll start on that tomorrow.
At least my flyback troubles are solved!