It's been a month so you may have already moved on this. If not...
All you really need to find is any camera that meets your other requirements AND has a mic input. A lot of Panosonic cameras at all of their price points have mic inputs but with other vedors it's hit or miss and usually when a mic input is available it's on their mid to higher end cameras.
Once you pick a camera that suits your needs there are a variety of way to get the audio into that 1/8" jack (assuming you're not getting a pro or prosumer cam with XLR inputs built in).
Beachtek has several options.
If you are used to the control that being an audio taper allows you then you will want to make sure that your camera has a headphone jack (that isn't shared with the mic input) and manual level controls for the mic input - preferably reachable with actual buttons or dials rather than via menus.
But in all honesty... if you're filming bands that already have a good taper community, you'd be better off partering up with a few of them and working out a deal where once you map their audio to your video you float them a DVD. If they know what they're doing then you can concentrate on the video portion and just line up their audio in post.
Good luck and congrats on the baby.
-K