At that price point you might also consider an Everlast.

https://www.everlastgenerators.com/catalog-tig

My friend was in a similar situation, giant Miller in the shop but, in need of something more portable. He picked up an Everlast (mostly for stick welding). We recently welded up a bunch of exposed architectural steel for his home renovation. The Everlast is okay. We used the Miller whenever possible. We lift start. Weld quality aside, TIG is nice when you don't want to make a giant mess. We did a lot of welding inside the house.

Do you really need an AC machine?