Wiring a NEMA 6-50R for an Eastwood 200 amp ac/DC Tig welder

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Wiring a NEMA 6-50R for an Eastwood 200amp ac/dc welder which has a NEMA
6-50P plug, which Operates on either 110vAC, 15-amp circuit or 220vAC,
30-amp circuit (Per Eastwood), Input Amperage: 28 amps. Eastwood told me today to use a
30amp breaker.

Is there any reason that I would not be able to use 10 awgSMLR copper
wire, high temp motor lead rated 150 degree C, class K stranded per ASTM
B-174, 105 strands, 70amp, 600 volt. I know there is class K & M welding wire 4 ga, but I don't think I need it for this 30 amp application.?.

3/4" PVC Schedule 40 conduit from service panel to outlet a distance of about 1' interior outlet and 2' to exterior outlet. Two bends in conduit each run.

1-Interior & 1-weather proof exterior outlet

Location: garage attached to house in Colorado, El Passo