Great advise here!!!
Thank you all very much for helping me.
I think I will go the United route.
Figure I could take my 29k United miles and add the 15k from Visa to these.
Take my brides 23k miles and add 15k to her account with Visa.
Mabey try and transfer the 5k into one of our accounts from 5 year olds account.
Any suggestions on the proper way to try this?
Order NG Kids for my 3 year old with the NWA miles.
Thanks again for all your help!
Edit:
Ohh, one last question: do United miles expire? Couldn't find anything on this from their rules. Thank you.