I fed my melleri exactly like I feed my young and growing veileds, only not quite as much - he just wouldn't eat as much as they will.
Ardi was partial to flies for the first several months (I got him at 3 months). Get some house flies - yeah, they're not too easy to culture , but they're cheap at spiderpharm.com. Ardi ate about 50% crickets, 50% houseflies, mealworm beetles and silkworms for the first few months. He loved the beetles as much as the flies.
As he grew, I started to feed him more crickets and superworms. now, his diet is pretty much 50% roaches, with crickets, superworms and treats making up the rest.
Supplementation wise, I use the exact thigns you have - Minerall 0, Re-Cap with D3, and herptivite. I also used reptivite (now I use fluker's) multivitamin as a source for vitamin A. I do not have a set plan - I kind of change things as I go - but roughly, I gave him a tiny amount of supplementation daily.
Most days, he'd get some feeders dusted with a mix of minerall 0 and repcal (2:1, approx), and then a couple times a week an insect dusted with herptivite. Once every week or so, I'd give him a cricket dusted in reptivite.
I went easy on the D3, as Ardi was under a 10.0 bulb. He never had any growth issues or vitamin A issues - actually, zero health problems at all, except a cut on his toe which healed up fast.
Gutload was simple - scrap vegetables fed regularly to insects, nothing intentionally gutloaded, really.
I would reccomend reading ecerything on Kristina's site - you really can't go wrong with the info on it.