A cheaper HVLP will work just fine , beings your not using it everyday for a living.
Try finding one with a 1.5-1.8 needle and an air cap that will really brake up the paint.
It will serve you well.
My helper at work uses a cheap Harbor Freight HVLP gun for just edging parts and it sprays decent.

and use your Binks for the High build primers, as it will really lay it on