Please, please consider getting an attorney for yourself. A mediator's job is to reach an agreement, not to protect either of you. At a minimum, I would refuse to sign a mediated agreement without first having an attorney review it.
If there is no money, how in the hell is he paying for plane tickets and hotel rooms?
He is being nice so you won't fight back, I suspect. If he is willing to give you what you need, as Grlonfr suggest, get it in writing now, before he leaves.
Otherwise, consider making an appt on Monday with an attorney. You need to understand what you are entitled to and what are his obligations. You can also seek temporary support orders and a temporary restraining order on spending. Don't let him drive this ship as a tool to try and win him back.
Finally, I suspect that his promise to spend a week in Europe a month will likely disappear once you are gone. You want a parenting plan/custody agreement that does not require you to send your D to the United States to visit with him. You can put language in there that requires him to visit her where she lives.
