I am also trying to decide if I want to do any upgrades to it. Some of the things I thought of are as follows:
1. Clip in pedals and bike shoes
2. Normal style pedals but expensive light weight ones
3. Going from stock 30’s on tires to a smooth 28
on occasion my son likes to ride a loop around the park which is fine crushed compact gravel but most of my riding will be on the road.