[Antorcha]

Have you considered a Lincoln 210mp? Jody and his buddy JD Brewer really like it and JD uses it in his business running dual shield almost exclusively. You may have seen it but it is in a number of Jody's videos.

Womb Broom® runs the 210 mostly out. He has a monster in his shop. There's a dude that can gidder done !
Great fabricator.No wonder he and J.C. are tight.

[Louie1961]

Dual shield flux core is one of the most productive processes there is. TIG welding is one of the least. If time is money, I wouldn't replace a MIG/wire feeder with a TIG. Go find a deal on either a Miller 252 or a Lincoln 256. Heck, maybe even buy used and buy more than one so you have a backup. Either that or invest in your own engine drive with a suitcase wire feeder.