Re: G diapers - using flushies only
well, you could use a prefold in there (newborn for size small, infant prefold for size M & L), or double up the gCloth
We used gDiapers exclusively with my daughter (now 4 in a few weeks) from about 4 months to 9 months, and then switched to GroVia (at that time they were still GroBaby). All the benefits of a hybrid system, actually a much nicer disposable insert, a trim fit, a more absorbent soaker and the shells are one-size, so no costly need to "size up". Much less fussiness with putting them on too, which eliminated the leaks the nanny and my husband were getting.