Two pups at once can be double the fun.....and double the trouble. It all depends on how you go about training them.

Here is a good article on the bonding issues you can run into with two pups in the house:
Double Trouble

And also some links on nipping:
mouthing and nipping links

All in all you know your family best, and I'm sure what ever you decide will be right for you and your family Good luck!