Keep going after Hellenic cities - Crete, Rhodes, Lesbos, Euboia (islands that you can build trade up with), coastal towns in Asia Minor at Sinope, Pergamon, Halikarnassos - all of Syracuse, Massalia, southern Italy. These are the places you will rely on to push you further into areas you don't get such good troops in. Finding a high level MIC in Ipsos has saved me a number of times already against Ptolemaic troops - I'd be in real trouble without it and Byzantion. And now I've got Pergamon, so I can get more there too. THen I use Demetrias to pump out Thessalian cavalry, and Pella and my Epeirote towns to send over the elites (good roads from Pella to Byzantion are needed).