I am lack of language..help me to translate to Korean language

My friend is going to military service after tomorrow and I want to say him some nice and cheerful words .. Please help me!I am lack of language "Korean "..!!

(you will learn so many lessons and you gonna be more mature in there , eat well and have many good friends .

군대가면 거기에서 훈련도 많이 받고 더 성숙해질 거야. 잘 먹고 좋은 친구도 많이 사귀어라.

Try to enjoy your time in military .

군대에서의 네 시간을 즐기도록 해.

It is sad that I can't talk to you for long time ... Anyway, take care

오랫동안 너한테 연락할 수 없다고 하더라. 어쨌든 건강하게 잘 지내.
I am waiting to see you again. (I hope you finish your military service well and) Come back soon.

널 다시 볼 날을 기다리고 있어. 무사히 잘 마치고 빨리 돌아와!!