Bombing can be a lot of fun and I have dropped a ton of hills over the years.
However, make sure you take it a bit easy at first and get your speed checks in order.
Nothing wrong also with wearing a helmet, whatever pads you can endure, and some solid gloves.
I have a friend who is a living testament to being safe when it comes to hills.
He was bombing one of our local spots when we were about 16-17 and caught
some bad wobbles. He went to check up and his wheels bit causing him to get
thrown pretty damn hard resulting in him honestly landing head first. This
knocked him stone out and cracked his skull. Got him to the hospital and he
was in a coma for almost a week. Luckily it didn't kill him, but the swelling and
such from the injury made him a bit slower in his speech and thought processing.
He also suffers from pretty severe seizures sometimes that were triggered from
the injury. It been over twenty years, but he still likes to get out and skate still.
Not trying to talk you out of any of this, just saying to keep yourself in check
cause I don't like seeing anyone get hurt or messed up for life because of
skateboarding.