If you want to be sure that your utilization is reporting less than 10%, you need to pay in before statement cuts. Look at your statement and look for when the statement ended. Pay your balance before that statement's ending date. Make sure you give a couple days before the end date so Cap1 have time to clear your payment. Your scores will go up considerably after bringing down your utilization, yes.
As far as I know, there is no limited number of payments to pay towards Cap1. You have $300 line, that is a small wiggle room. But if it was me, I'd use the card as much as I can then PIF and reuse until couple days before end date, stop using the card. Then on a new statement cycle, start using it.
I can't comment on Surge as I do not know what that card is. But if it was me, I'd try to use it once a month and PIF.
See if you can use this thread to guide you through in your rebuild: https://ficoforums.myfico.com/t5/Bankruptcy/HOW-TO-From-BK7-discharge-to-700-in-24-months-or-less/m-...
You were recently discharged, don't worry about the mistakes you made. Let things settle, let things grow. It takes patience.