The mesa amp circuit runs on like 30v dc I believe. So you'd need a pretty expensive boost regulator. Like $20 in small volume. And it's got 5 inductors and the faders. Beyond that it's a trivial circuit.
Not sure what they did for the pedal but duplicating the amp version would be just fine IMO. You could add an input and output stage and two knobs if you wanted but the amp version should be unity gain.