I don't think you will be able to launch much of an attack on either, I'm sad to say. You're too far behind on science and economy and especially on alliances. Forget pikes, Beardo will have his UU soon, and he's in the way of Mrs. Mythically-Underdressed, and both are deceitful horrid so-and-sos. My recommendation, since you annihilated Miseryguts, is to switch to Diplo and save all your gold for the CS, allying them earlier rather than later. Come the Industrial period, one of the aforementioned so-and-sos will have conquered the other and will be throwing everything at you. Concentrate on defence.