My trip is from May 25 or 26 until June 09 or 10.

I have an AA flight on a separate ticket from DFW to ZRH. From ZRH I need a connecting flight to Dublin on the above-mentioned dates.

The only relatively reasonable option seems to me Aer Lingus.

About FFPs: I am elite in SkyTeam and StarAlliance (not in One World). The AA flight will be my first paid One World flight. I guess I shall credit the miles to AA? Or is there any better option?

What might be important to me is baggage allowance because I may have > 20 kg