The Priority 16" Start will arrive tomorrow. My son purchased it for his almost 4 year old son with Affirm. I purchased the Woom 12" that my grandson has grown out of. He learned how to use the hand brake on the Woom, so hand brakes on the Priority Start will be easier to learn. He has short legs so There optional short seat post was purchased with the bicycle. I will probably switch out the V brakes that come on the bicycle. I have a Deore XT set in my parts collection. I am the one that takes care of flats, so I will see the tires and if they are nothing special then I will put some Schwable Marathon tires on.