I think live in maids make about 5,000 RD or so a month, depending on location.
If he is a true friend and you value your relationship as it is I recommend that you do not become his full time employer. I think it would change your relationship and could potentialy ruin it. Hire him for odd jobs or special occasions but I think you will ruin your friendship eventually if you hire him as a live in full time employee. Just my two cents.
Good luck with your move.