PS for Son of Zen project

Thinking of building a PS for Son of Zen.
Output Target: +/-57VDC, 10A

Toroid: 2500VA
Pri: 110/115/120?
Sec: 2x 40-45VAC

this is all quick & dirty napkin math

In the US, who is the go to for such a Toroid?
Please feel free to critique.
I love feedback.