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The two cards you have are *perfect*. Make certain to get the 1-2-3 rewards tacked on to the BOFA secured card.
Your next steps are to use the cards and just to hang out for six months at least, and a year is better. Once that year passes, you're qualified entry level Chase / Discover / Amex if any of those cards meets your needs and you have the income to support it.
Payment: whatever you feel like; it's traditional to just pay once a month but lenders these days don't really care as long as they get paid. I'm lazy and don't spend a lot of time managing my cards, so I just pay once a month personally... there are other members that swear by the multi-payment method. Neither will change your FICO score as long as you make the payment on time.
Everything else is pretty irrelevant at this time, but there's a lot of information on the forums about managing your reported utilization and other topics for improvements to your score over time.