Personally would recommend Na Uyana in Sri Lanka over Pa Auk FM in Burma.
Na Uyana has excellent support, they take care of all foreign monks' passports, foods good, great solitude, and you have freedom to practice your own method of meditation IF you want. There's a good number of western monks there and they have a good library. The medical & dental support is a world above what you'll get in Burma, and for monks it is free.
Not trying to put you off Pa Auk in Burma, but it does have a reputation for malaria and the medical care you will get in Burma is not great, even by Asian standards.
"For a disciple who has conviction in the Teacher's message & lives to penetrate it, what accords with the Dhamma is this:
'The Blessed One is the Teacher, I am a disciple. He is the one who knows, not I." -