Should we leave and rent or wait and buy?

O.k we're supposed to be saving money to buy a house by living with my in laws but they are driving us mad. They have messed up y routine with my son by constantly interfering with his upbringing. I've managed to keep his behaviour unchanged but Im so tired from doing everything the wrong way round.We get lectures about where we go, what money we spend. We even get told off like kids if we don't make our bed as soon as we've got out of it! For example my 3 year old son wakes up at 6.30am and gets into my bed and watches tv until about 8am till we get up for school. I work late nights so i cat nap till then. She comes in a bribes him with toys or whatever to go downstairs with her. If i tell her he's fine with me she gets upset for the whole day that I didn't want her looking after him. Anyway after 5 minutes he wants me and is crying for me to go downstairs with him. Everyones asleep so i have to go to keep his quiet. (This is the bit where im supposed to split myself in two and make my sons and my beds, tidy the bedrooms and pick up the laundry). Then she just takes it upon herself to make him breakfast and dress him when its only like 7am when he doesnt have breakfast till 8.15 and then gets dressed at 8.45. I know this sounds silly but son is a little OCD and has to do things in sequence. If he knows he's given breakfast and dressed as soon as he gets up, he knows that he's going somewhere. So for like an hour he's moaning at me to go out with him when school doesn't start until 9.15! Then my FIL gets up and moans about th estate of our bedroom so i go clean them. I know she's just trying to help but i've tried explaining nicely why i do things the way i do and that im o.k doing it my self but she goes off and bitches about me to her husband and then he bends my partners ear about it. My partner has had enough and wants to just go and rent again. The problem is I know they'll get upset with us and we might regret not holding out and buying a place. With the credit crunch we really aren't in the position to buy for at least another year and we want another baby but cant have one living here. What would you do?