Hi,
I just read your post. And I understand your situation I`m Portuguese too, by now you probably have things resolved since this post is from a while back. But just in case maybe this will help.Have you thought about a wedding planner in Portugal to ease the stress.
A friend of mine had her wedding here in Portugal. French English and Portuguese it turned out great even with 3 languages on the invites they looked great and she had a translator at the ceremony during the vows. If your still with any dilemma with having a wedding here let me know maybe I can help you out from here
best of luck
Tania