You sir are in a similar boat to me. Full time work, married and I train at the gym a lot. I've found the quickest way to grind up levels is from patrols and bounties then buying stuff with marks. That way I got two legendary weapons and two legendary armour and I find that the more you have the more you get from drops and playing other things then. It's weird like the game knows you need some decent stuff. I've got all sorts since being level 28 and now at 29 even more.