Phonegap Vs native iOS/Android development in 2014 [closed]
Clearly native has some benefits over the web frameworks like phonegap. But the thing is what you want & need? If you want a quick solution then phonegap is best for cross platform. You can do it in easy way for all common platforms. But if you want your app to be fast & efficient, of course native has it's benefits.
Given your requirements, phonegap could be better to serve your purpose. You can continue with same code, and exact same design for all platforms. Not only for ios and android, but also with windows phone, amazon fireos etc.
One of the thing is that there are thousands of app building in phonegap these days, so it can be told that it meets with the expectation to a certain extent. Phonegap is efficient enough to fill these apps' terms. With proper use of frameworks like sencha, jquery mobile, kendo UI and many more phonegap can be highly efficient.
I don't think it's possible for anyone to tell you that if the app could be completed in 10 weeks in native apps or not. I would go for phonegap to continue with same design and same code. It would be easy to make change in the app if needed in future. But decision have to be yours based on the issues and requirements :)