I'd buy a bag of happy frog, perlite, huge bottle of big bloom and small bottle of grow big or advanced nutes version of the VEG. Nutes....if crazy rain, mold and mildew are your problem your soil isn't draining enough, use rocks at the bottom and lots of perlite. Just because something is "light" doesn't make it right. Sphagnum peat moss is really light, but between compaction and it's water lockout once it dries, it's a horrible choice. I'm sure shroom compost might be good, but your probably still gonna need perlite.. overall tip, since you are there to watch it, get very draining soil and(whatever it is, just lots of perlite) recycle your plant water runnoff,.. If it dries up rain wise, you may need to water more often but if it stays raining the perlite will keep the water from sitting around your roots, which is the issue at hand. Advanced or fox farm trio will be fine, with the least amount of added ingrediants. The little deficiencies are what's gonna cause you problems otherwise...the know how of how to diagnose and fix them in the boonies is gonna be what you really need.. every nube has water, pH, and deficiency problems and if you asked them which it was, you will see why they have the problem, a trained eye is what you will need, top rule, go by what your plant is telling you!!
wilt is water, shrivel is too much. Light green is hungry, bright green is too much, bottom old leaf problems are main nute problems, ..top new growth are micro problems...and all this irrelevant if you don't know what your looking for, and even these descriptions are wrong sometimes...
depends on strain and plant demand and the big question, what it's been given already..when you use miracle grow and the other all in ones for greenery, salt buildup is almost always the root of the problem, and drowning your plant is the only way to fix that, so be careful of buildup of nutes too.