The risk / reward on those is pretty terrible. You would get a bigger percentage move by going one strike out of the money. I prefer to set myself up for 2:1 or better risk reward ratios, that way your winners pay for the losers. To me, buying in the money options is like trading spreads, but with more risk. At least on a spread, the probability of the trade is higher for a lower percentage gain.
Either way, hope it works out for you. I have 10 of the Sept 455's @ 1.32 and a handful of the Oct 465's @ 5.70.