Help Me Step up My Setup

[Big J All Day]

This will be a rambler for sure! 6 months, no smokes, loving every minute! Current setup, 1000 MAH Ego Twist, every clearo/Vivi/ ProTank in my inventory, but just started using cartos and love them, love. 4 volt max on 18 mg juice, varying PG/VG. Now, the question.... I want to get a mod, preferably a mech, ie: Legacy, K-100, or chi-you clone, you see my price point. Now to add to that, I'm not a dripper, not a rebuilder, no time for that stuff. I also can't afford to be buying up more equipment every week, I want my standalone tried and true setup. The only choice I want is my juice. Is that too much to ask ppl? I love the customization of my hobby, but I need to settle on one mod, one tank. Additional question in need of clarification. I see everyone running high volts/watts to low OHMs and blowing clouds like I want to, but I cant raise my volts without burning up coils and bad taste so why would my VV or mech mod change that? What am I missing? AND if I buy a mech, it will only push 3.7, I get a kick and raise my power, but I will burn up coils right? Don't make me go to RBAs! But if that's my only option, I will understand. Help me keep my habit/hobby cool, but easy. If you could give me some advice and list a bad ... carto tank + mod that isn't the size of a mag light and affordable, I will be forever grateful. Happy vaping!