Each baby has different needs. They are not all exactly the same. That is part of what attachment parenting is about - learning to respond to the needs of your own child and helping them fit into the pattern of the family they have joined.
Unless your baby is seriously underweight you don't need to wake her to feed her. Let her keep sleeping and enjoy the extra rest yourself. (Usually people are having the reverse problem where they are trying to make a baby sleep through the night - again, in that case they should respond to the baby's needs then the baby will happily go back to sleep).
Similarly during the day, let your baby sleep as long as she needs (unless you're needing to go out, a breastfed, attachment parented child copes very well with flexible routines because their needs are met wherever they are). You can certainly let her sleep longer than an hour and a half. Don't force a feed on her, respond to her cues so you can enjoy your nursing times together. Use the extra time she is sleeping to do all your jobs.
My children have never had a 6-7pm bed time, but I've never wanted them to. If you want to make her bed time earlier, you could try gradually bringing it back by no more than half an hour a week being careful to give her all the love and assurance she is used to getting when you help her go to sleep. Whatever you do, don't try to force her to sleep by controlled crying.
It sounds like you're doing a great job of mothering your little daughter. Just relax a little more and don't expect her to fit the mould of what a baby is "supposed to do". Have confidence and listen to your daughter. She is telling you the answers to all your questions.

Thank you!

Follow up question

That was a great reply. I'm wondering at what age is it okay to stop waking baby? My daughter is only three weeks. Sometimes she goes 45 minutes between feedings and sometimes she goes 4 1/2 hrs. Usually it's closer to three hrs at night. What's acceptable for a three week-old.. And when does that change? Thx!

my DD was the same way and everyone told me to wake her up to feed her, so I did. Eventually she stopped sleeping through the night because she anticipated my waking her and it was quite a struggle to reverse this. Once we got her back on track, at about your childs age she slept 8-9 hours, nursed, slept another 3 and then took a 3-4 hour afternoon nap. Just relax and go with her cues. A baby won't sleep through hunger if they are gaining weight and are healthy