How many kids? Do you have a regular (non-cargo) bike that fits you well now? Sounds like you like the idea of having your kid(s) in front of you while you ride, based on the two bikes you mentioned above. If you are interested in having a custom bike built shoot me an email at:
mtsfabman@yahoo.com I enjoy designing and building cargo bikes, take a look at the CETMAcargo bike, I designed and build that one.