I've been buying feminized seeds these last three years, so far they've all been females.
I'd just re-pot to the next size up in your situation. One gallon is fine.
I'm liking the idea of using cloth pots for the final vegging and budding. From what I've gathered they are less stressful on the root system, i.e. heat and air flow.
Regarding potting soil, I'm using Kelloggs Patio Plus - Organic from Home Despot with an organic fertilizer and worm castings. Be careful with fertilizing, a good rule of thumb is to use half the recommended dosage.
My two sisters ran a gardening business here in soCal for years and they swore by Sunset Magazine's Western Garden Book for basic information. It was their 'bible' so to speak.