I wondered if it's possible to use to big of plasma cutter for the job. I'd like to cut thin sheet metal 1/16" or so up to 1/2" plate. I'm close to getting a deal on a Miller Spectrum 3080. According to the online manual at the lowest setting can be adjusted to 30A output (I'm guessing this by looking at the dial).

Any suggestions if this is overkill to the point that my cuts would suffer on sheet metal?

Thanks ahead of time.