Salboo - I put DS in the bumbo when he was about 4 months. I think they need to have good head control before they can be put in it. I would recommend them and we used ours a lot.
Trish -we don't have set nap times but as a general rule it goes wake 5am, feed and then dozes between 6am and 8am. Feed 8am - 9am and then awake/doze time. Feed again around 11am - 12pm and then dozes. Feed again around 3pm - 4pm and then again at 5pm and then dozes and final feed around 8pm - 9pm. We put her down for the night and then may be up sometime between 1am - 3am. There are a lot of catnaps during this time and if we are in the car she will generally sleep or if I wear her in the sling so she does get some longer periods. Looking at this with the number of feeds I am giving her my supply should be great.

Immi slept from 9.30pm to 6am!!!!! She did stir at 5am but she went back to sleep. Pretty pleased about that.