More than the electronics, I would be curious about the performance of 3d-printed plastic parts on a rocket. Are they strong enough?
People have been doing 3d printed model rockets for a while now. With no payload they experience higher acceleration than this will.
3d printed PLA and spiral wound cardboard is generally fine for hobby rockets, until they start going supersonic - then you need metal.
I'm not sure the launch tube could withstand the heat of the rocket exhaust though. Although that might depend what it is printed with.