Current plan is to get BA Silver, and access all ACs via Oneworld Sapphire status. Some existing BA short-hauls this spring in conjunction with the smoking JFK-LAX-DEN deals in AA F should do it. Most of this travel was planned already, so just had to add a flight to reach 4 qualifying BA segments and change all of the miles crediting to BA. It also helps in that I am finding increasing value for Avios, so we'll get more out of this than just lounge access.