I've got a ton of Membership Rewards points and was about to take advantage of the transfer bonus. I know I have a few different options, but it looks like Aer Lingus is my first choice.

I am in Orlando, and Aer Lingus does MCO->DUB. I know I can get this flight using Avios, without huge charges.

We want to go to Italy, either Rome or Venice, or a comination (arrive Venice, leave Rome.

Can we book the Dublin to Rome or Venice, and back, portions using Avios?

(lastly, our other options seem to be AirBerlin and Iberia. These flights would be out of Miami, which isn't a bad drive. If you want to add anything about preferring one over the other, please do)

Thank you!