Does anyone have any advice on which Skyteam FFP is best in terms of quickly getting to STE+ and getting lounge access? I don't really get much vacation time with my job now so flight redemption isn't so important to me.

At first I thought Flying Blue would be good since the threshold for STE+ is only 40,000 miles, but there website states that I will have to earn these miles by Dec. 31, which I'm not sure that I can do.

Now, I'm looking at Aeromexico's Club Premier which you need about 50,000 miles and should give you one year, however their website states that I only have until July 31 to earn these miles and I just sign up on July 7. I'm wondering if this is some kind of mistake though.

Does anyone have any other suggestions?