Additionally, I'd worry about the Panasonic FM 10,000uF, at least Panny don't make it in that size. I'd wonder where you're getting them from. You may be referring to their tank caps, which come with other series designations.
A side note on your supply: I've built over thirty chip amps, and I did not ever like using a regulated supply. There is no improvement for the extended thermal footprint it creates - I tried a series pass and cap multiplier supplies. I would recommend you try both regulated and unregulated, and arrive at your preference.
The best improvements I've found is by keeping signal paths really, really short. I use only P2P construction now, I was using the Audiosector LM4780 PCB and kit for a very long time (~2 years) but I ended up with point-to-point wired LM3886, with the feedback resistors soldered directly to the chip pins. The sound is far superior to Peter's kit (admittedly, I haven't heard his top-end offerings). Also a few exotic components help. I use Roedersteins, Holco and Black Gate in the feedback path and the sonics are stunning. Together with a snubbered 40,000uF supply for each channel, there is no shortage of impact, resolution and separation.
And lastly, you might want to try the Class A mod. I'd be interested to hear your opinions on it. It basically involves running a small current through the output stage to bias it into Class A upto a few milliwatts. This helps with the crossover distortion and linearises the output stage at lower levels (I'm assuming you'll be doing a lot of close-range listening). A 1.5K, 10 watt resistor from the negative rail to the output should be good for 23mA, which will get you some benefits without incurring too much heat penalty. Try and keep it below 50mA if your heatsink is not up to it, and because the 4780 is two chips in the same package and so more thermally challenging.
Have fun!