Cameras : Feasible, yes , but not that simple. I do not know what you can or cannot do in the USA with a certified historic aircraft, but in EASA Europe no way you can add a cheap camera where you want. You need an STC and the costs of getting it could be very high for so few airframes.. Even a portable one inside the cockpit is not a good idea if you plan to do some aerobatics with it
An anecdote: Airbus , at the request of their customers has considered adding 2 cameras in the wing tips of their A380s for taxying help. the costs of recertifying this for so few airframes was huge and it was abandoned.