Hi Mark and welcome to the life on two wheels!!
My first motor-bike was a Honda RS125 with a reasonable amount of acceleration except in a strong headwind!!
By the time I decided to have one, very much the same reasons as yours the laws regarding learner riders changed in that one was restricted to 125cc with a two part test. Exception being if the bike had a sidecar attachment and that was to a maximum of (I think) 400CC then. Later I bought a Honda VT500E and below is a tale of its' demise.
One tip when riding if I may be so bold ( I learn't the hard way) no matter how hot the weather may be always wear leathers and good protection for the protection afforded when riding a motorbike is......Zilch!!.....between you and the hard surface of the tarmac is just a coating of thin air which does not even support the weight of a feather!! Come off, as I have seen other riders do wearing just a T-Shirt the after effects of their body sand papering the road does not make for a pretty sight. My mistake was just lazyness, finished work Xmas Eve, parked up my tractor unit after dropping the trailer then, as I only had four and a half miles to ride home, just put on my helmet and thick biker jacket not bothering to put on the proper leg wear. Maintaining the national speed limit on a country road with 2 cars following a dog suddenly ran in front of me, could not take evasive action but my speed was down to 50mph when I scored a direct hit .......result?.....Brake lever through the knee 2 cars following swerved either side of me, onto the grass verges (fortunately there was one either side of the road) and I was sliding very undignified along the crown of the road with my bike keeping pace with me (my leg was trapped underneath) and fortunately no traffic coming the other way
Spent two and a half years on sick including physiotherapy, lost my HGV Licence on medical ground (knee-cap removed) have arthritis and loss of leg muscle. Now in a completely different career as a result of some stupid half wit woman!!
Why have I related all this? Because you might just need to very quickly ride to the shop or somewhere (maybe just a mile away) and you feel it is too much time consuming to get into your protective clothing for such a short trip...!! Not saying for one minute you would, but always be prepared for the unexpected and be protected.
Safe riding.
Regards
Nigel.
I used to be an optimist but with age I am now a grumpy old pessimist.