charlie- have you checked for teething? my LO's start teething around then off and on and it effects their sleep. they dont pop a tooth in til about 11-12 mos old, but its rough til then.
we have a moby and a maya ring sling, absolutely love them both!
as for showers, 2 years ago when i had number 4 i got used to showering in the evenings. i didnt like it at first and complained a lot to DH. now i am used to it though and really look forward to my shower. with 8 people in the family it works really well. my DH and our 2 girls shower in the morning (they are home schooled so no big rush) and in the evening we bathe our 4 boys 2 at a time. when they get out my DH holds the youngest while i shower.
we have a minivan and a truck, they are both paid off thankfully! our minivan only hold 8 though, so when we have another we will need to get something bigger
we have a jogging double stroller and just love it