in answer to both posts - the fact that you have asked for advice on here suggests you are very inexperienced with dogs and imo going to have huge problems trying to deal with two male dogs and an older one. this is not meant to be horrible to you in any way but as you have found out, there is more to owning or caring for dogs than putting a plate of food down for them - not a good idea for you
Have had staffys and love them to bits but will never own them again. They are very possesive over their food , toys and owners. I had male and female and didnt make any difference. They would fight. and when they fight they are scary . They are high energy dogs need lots of exercise and attention. I have friends whos staffys are fine and get on well but mine were full on. So if already you are having problems I would say one dog only and enjoy that one. They are such good companions.
I like Staffies but would not own one because I don't want to be branded an idiot like 80% of the staffie owners that have these poor dogs as a status symbol/fashion accessory