Hi, new here and looking for some advice as I need to switch FF programs.

1. Just recently moved from LAX to LIS

2. I fly >100K each year for work and pleasure. Work is almost always business class while pleasure is economy with fingers crossed for upgrades

3. Most of my travel will be within Europe with some transatlantic (maybe 5 to 10x per year). I expect LIS-LON to be my most heavily traveled route but that will probably make up less than 40% of my overall travel.

4. I have been AA Concierge Key for the last 5 years

5. Important FF benefits to me in order are: award tickets, award and complimentary upgrades, priority check-in and lounge access

6. I can choose which airline and sometimes class

So in LIS what is the best FF to partner with and how can I leverage my AA status on the new program?