Gee, what's all this talk of attacking Germany about? I think Aelf has enough on his hands as is. So far, it's been smooth sailing - but just look at the power-graph.
IMHO, the remaining key war objectives against Rome are to take control of an iron source, with minimal losses taken and maximum damage dealt to JC. I suggest taking and razing Magyar and founding a city on site A, then suing for peace. This is guaranteed to secure the iron (I have concerns about cultural pressure for site B) and it spilts whats left of the Roman Empire in two, which in my experience is a real problem for the AI in terms of deploying units.
The faster this is accomplished, the better. For one thing, JC may yet have a powerful stack of preats waiting somewhere (my bet would be Rome, which is why I am against trying to take it), for another, the real contest is against whoever is out on the other continent(s): The longer Aelf is at war, the better for them, as their tech lead from research and trade will only widen.
Lastly, I would advocate against going to war vs. Germany before contact with the other civs is made and a clearer picture of the state of play has emerged.