Cheaper than sposies... yes! definately! plus if you invest in well know brands they will resell well

BG i use on DS. He is almost 6 kg and the legs are still a bit big and prone to leaks. Especially on his side. unless you plan on having a 7kg baby lol the OSFM pockets may not be the best to start with a newborn.

You can get fitteds for newborns.. i honestly think new bubs should have sized nappies that fit well rather than a OSFM in the early months to minimise leaks and poo plosions. So i would go some bamboo fitteds in NB/Small and PUL covers. Covers are an excellent way to keep the squirts contained. i know you didnt want to do flats so perhaps fitteds are the way to go .

As for liners. I use liners and the poo still gets on the nappy. It is liquid and squishes tot he sides and through the liner. I think if i didnt have the LS i would have not lasted lol... so i would invest as they are wonderful!!!

i was every 2 days (i have 2 in cloth though). and i have 12 AIO and 12 fitteds and never run out with DS. (i have more for DD = these are just what i use for him). I dont change him overnight either as he is in a Night nappy and sleeps through. But perhaps aim for 8-10 nappies a day in the first month or 2. Then i change DS 3-4hourly now if he is in a good bamboo nappy.

HTH and good luck.