I Have a few questions 1) would you guys beat a competitor's price on this unit, 2) where can i find a list of accessories meant to be used with this machine specifically and what else would I need to purchase so that I can Stick and Tig weld, 3) what else would I need to plasma cut with this unit 4) and what are the limitations and capabilities with this machine when It comes to TIG welding aluminum? Thanks for you help