I think it's horses for courses! Some people find it difficult with one! I'm with VIctoria Gillick (and this is the only thing I agree with her about...) she had 10 and said the first 2 were the hardest.
Effective training is the answer, don't do everything yourself, especially boys - you don't do them any favours. My kids have dressed themselves from an early age, they get their school bags ready, ds2 (9) makes his own lunch and they all get their own breakfast in the morning aided by ds1 (11). (cereal and bowls at a low level, toaster on the kitchen table). It's exactly the way I was brought up as teh youngest of 4. When they come home from school they all make themselves a sandwich or toast. We make dinner altogether, ds1 chops (under supervision), ds2 stirs and dd grates cheese! (or similar small task). As ds1 says, he will always be able to make himself lasagne!
Shhh, a section would be less likely the more kids you have I would think, births should (!) get easier. Also mine didn't get any bigger - all 2 weeks overdue - ds1 9'5'', ds2 8'12'', dd 9'2'' - who knows about this one (number 4).
A friend of mine (no kids) came round one night last week. Ds1 was doing his homework at the dinner table, friends were calling for dd and the dog to play in the park, ds2 and a friend were up a tree in the garden in their karate suits. She said 'my god, it's like the famous five in here!' - I said yeah great isn't it?! BTW I also work full time!