Capacitors don't worry about amps, just Volts.
48-53V caps are easy to find. The more of them you have and the higher the value, the better you can suppress the ripply in your rectified AC.
I build Vacuum tube guitar amps for fun, I have caps the can handle 500V in the last one I built.
I'd get some and try it.
Look at some TIG welder designs and see how they do it.
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Bow
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