Passed my test 37 years ago more or less to the day, my dad bought me a Mini 1000 for £1095.00 - I wanted the Capri 1600 XL next to it at the same money (3 years older) - he said no chance you'll kill yourself.
He was right
and I nearly did in the Mini LOL.
I'm sorry as much as you feel bomb proof and all knowing at 17 I'd have said no until you've got serious miles and road sense under your belt... you've got your whole life in front of you.
At least at 23 you've obviously got road sense - for now though as you've already got it, just go real steady
Good luck and enjoy