In Formal letter^x, Regards^x, Capital letters^x

1. can I finish a formal letter with "Hoping to receive your answer and sending regards, Joanna"? I find this too informal an ending for a formal letter. I hope to receive your answer shortly, and then your formal closing. 2. should I write the pronoun "you" in a capital letter? ( in formal...

Hi, I've got some questions and I hope you can answer them. Thanks in advance 1. can I finish a formal letter with "Hoping to receive your answer and sending regards, Joanna"? 2. should I write the pronoun "you" in a capital letter? ( in formal or informal letters) 3. can I say "call for girls"...