ll80 - have you thought of adding a bamboo or hemp booster to a pocket nappy or boosting a fitted? I sometimes use a boosted BumG or Pocket Change overnight (when all the NN are wet) or for long car trips because DS can wet thru a BBB in under an hour.
I have a few green kids pockets which she uses overnight for around 7 hrs atm
in it i put the GK bamboo insert & booster as well as the microfibre booster that came with bumg pocket.
it's soaking by the time she wakes up and sometimes so full it leaks, i also prefer not to have PUL on her for too long, especially as I don't think it will be long before she is sleeping 12 odd hours

so far i am thinking the cute tooshies is the way to go for the side snaps which seem to fit better on her and its all bamboo