It should be a cut above the usual hobby-type SIP machines complained about on here.
It has an all-metal wire feed, which should be much better than the ones in the SIP hobby migs.
A duty cycle of 15% at 180A is okay for occasional heavy work, about 1.5 minutes continuous welding in every 10 minutes. No good for fab work at that end of the scale, though.
30A minimum output should be alright for body panels, with practice, if the wire feed is smooth.