You are never too short to ride a bike. Hell I have gone to bike nights where there was this guy who was paralyzed from the waist down. That guy rode better than me, and did wheelies much better than me. I was furious!! He had a air shift kit installed, and a switch so when he was coming to a stop he would lower these 2 arms down by the rear wheel, almost like training wheels on a bicycle. This kept him upright at stops and he always rode with a buddy so any backing up was taken care of by him.
But Congrates on the bike. It looks like you need a lot of work done to it. How many things are you missing? I have a speedo for that year, but I think the bulk of my spare parts are for older gsxr’s. I have a tank for an 02 GSXR1000, upper plastic for 04-05 GSXR600/750….nice things you get to collect when you do crash repairs and go to closing businesses and they are just dumping their inventory. But I use to ride with this 90lbs asian girl, she was barely 5 foot and she rode a R6. She never had both feet touching the ground at a stop. She learned to prop the bike on the sidestand and spin it around, and when she had to back up she always just walked along side of the bike to back it up. I would suggest doing that, before riding a bike that is lowered, because you mess with the geometry of the suspension and it doesn’t handle as well as it does at stock height. Besides it always looks funny, because the rear is usually lower than the front!