RC,
As mentioned by myself and others, the pure DC machines are "user friendly". Remember, make small adjustments. That sweet spot will come to you evetually.
I certainly would not recommend selling the Vantage. For one, it is a multiprocess rig which can be very beneficial for diversity of projects and materials. Coupled with an LN 25, a Hi-Freq unit, and nothing is beyond your bidding capabilities.
Since you seem to be confident in your technique and ability to lay in a root, it serves you no purpose to practice with your friends Red Face. When you do get the bells and whistles dialed in, it will be a beautiful moment.
For me, your gap and land is a bit much. With that size pipe, gap and land, I would use 5/32" rod. When I learned, it was always nickel gap and land...3/32", with 1/8" rod.. The bigger the gap, the colder you set the amps.
Also, I would put the loosesed gap topside and tight on the bottom.
That' just me...everyone is different.
Tomorrow, you'll be slicken it in there like a wedding band.