Strategy change

Ive been demo trading the same basic strategy, that is meant for stocks, The strategy is premarket and 5 minutes opening range breakout and retest of major stocks of the sap500 and nasdaq and i have been profitable with this for the last two months. I want to get funded in a couple months because i dont have a lot of capital to trade with(around 6500$) but after doing research on prop firms, pretty much none offer stock trading and the one or two that do are not reputable at all. Should i completely change my strategy and switch to cfds and futures?