Thanks for being flexible about trialing living together. I appreciate that you’re making a concession. I can stay some nights at a friend’s house to try and make things less stressful for both of us at the beginning, depending on how we are both feeling. I want you to feel comfortable. (On the house note, I like being around F. He reminds me of JL.)
This paragraph I think should be re-worded somehow. I think you should take out that he is making a concession, it almost sounds like he is backing down and you don't want to put that thought in his head. How about something like....
"I am looking forward to the two weeks and have even discussed staying with a friend a few of the days in order for us to get some space. By the way I was meaning to tell you that F is really cool(**what ever word would be appropriate for you) and kinda reminds me of JL."
The rest does seem good, you are validating and it is not too long. You got your point across also about having to leave Poland.
You have one week to prep yourself. You are going to have to be happy happy happy!! LoL Even if he says something stupid or hurtful you will act your butt off like nothing phases you and validate!!! I have a feeling you are going to do great proving him wrong!!!
