With/in A4 paper

With/in A4 paper
 

My sentences:

-Please print out your manuscripts with/in/on A4 paper, each page with no more than 1,000 words, together with your name and contact methods, sent to ___.

Are they natural and correct English?

... on A4 paper ...

... contact information ...

Thank you~

But the original sentence is appealing for contributions, something that will happen in the future; do you think I have to say 'to be sent to___', rather than 'sent __'?

... to be sent to ... sounds better, yes.

Thank you~