Epeiros

[bobbin]

You might want to have bit of a rest and build up your economy but if not I'd suggest expanding up to the danube as this gives you an easily defendable border with the getai who most likley won't attack you for a while, you could go into getai proper for their mines but recruitment options there are awful so i tend to leave it until later.
Also capture southern italy and sicily as this will give you an excellent base to invade the rest of the western mediterranean, you'll probably need two armies for this as the romans will always be sending stacks your way.

A nice map of my suggestions.


This also makes a very nice european empire as your entire land border is defendable from river crossing.