For sizing/scale, take a look at the group picture I posted along with the Alice model. That picture has the full set.
FYI, I did the Cheshire Cat when I first started modeling and my wife asked me to make it as big as my printer would allow. The rest of the series was done much later and I had a better sense of proportion at the time, however, the full sized cat fits very nicely in the group.
If you have the time, Plese be sure to post each model individually and the a group picture when finished. All my work is free and seeing makes gives me the incentive to keep modeling.