what advice would you give me?! Other than "don't do it" 
The date for the sleepover will be a Saturday night towards the end of the Easter holidays - they are back at school on the Tuesday.
DS1 would like to invite his two best friends, two other friends and the little brother of one of the best friends so DS2 will have someone to play with. This gives me 7 boys aged between 6 and 8 in the house, and I am a single mum. Hopefully some of them will be away still!
I am thinking they will be too excited to eat, so snack type foods to keep them going, and birthday cake. A bit of charging around the house, some games on the pc (no X-Box or Wii here), some dvds and then bed, eventually? All wake up too early and I get rid of them as soon after breakfast as is decent.
The boys are in one enormous bedroom, there's certainly room for another 5 on the floor. Anyone who didn't want to be in such a big gang would need to sleep in a small study, or in my bedroom.
And if anyone wanted to go home, his parents would need to pick him up as I wouldn't want to cart all 7 around in the car just to get rid of one. It is this last point which worries me most. Do you think I need another adult in the house?
We have never had any type of sleepover before so your top tips and wise words would be fantastic.