Babies that young are not likely to sleep all of the way through the night. the only reason that they would wake up is if they are hungry or in need of contact, otherwise they would probably sleep. Also, at 8 weeks they are becoming more aware of their bodies and it scares them a bit when they realize that there arms and legs can move around. My short answer, you should be resting when the babies rest, and forget about doing anything, especially when your husband is working long hours, but taking care of the babies. This stage does not last long, and you will miss it when it is over (I know you don't believe me now...)
A few people are lucky and get their infants to sleep the entire night. Most people are not. My son woke up hungry every night until he was about 8 or 9 months old. Since your children are twins, they are probably growing a little faster, so they need to be fed that often. Since they have little tummies, they empty fast. I would not deny them food in the night, you could bring on malnutrition. Also, do not worry about hours of sleep as stated in the parenting magazine. Those are guidelines. Also, do not let them go unconforted for too long without answering their crys. They need to learn that mommy and daddy will always be there for them. At this stage of their development, once you leave the room, they think that you are gone forever. If you let them cry, they give up, but they also give up emotionally too, and can be clingy and reserved later. Keeping babies awake for hours on end at this age can also effect their emotional and physical development.