Hi, 12 yrs later i think important starters are 1) price yourself at what will make money with staff and overheads not what fills your pockets when you're doing the cleans. (more paying less or less paying more ?)
2)Start as you mean to go on all through the books
3) Work hard but take breaks or you'll get sick of it soon
4) Staff can be a big headache if done wrong... pay lawyer for contracts,set clear terms and don't be afraid to fire slackers