Before getting down to building your prototype, decide with your team what exactly do you want to test with it? Is it a usability aspect? Is it price? Is it functionality?
For the first and novel prototype the best is to start with testing whether the idea will get market buy-in. This means that the prototype would focus on testing whether or not the product you intend to build will be in demand once its available.
Product usability should be tested separately, to determine what could make your product more useful. If you and your team will manage to get enough time to test different prototypes and improve them, go for it! Another way is to build 2 prototypes and to test them with two different user groups at the same time – one would be for market acceptance and one would be for functionalities.
Decide what you are testing your prototype for before you start building it.