Im sorry but thats the kind of attitude that causes accidents. I knew a person who did direct access and went straight out and bought a GSXR600. He thought, oh its only a 600 it will be fine. He crashed the same day, as he wasnt even remotely experienced enough to handle such a bike. I have a restriced Suzuki GS500 (33bHp) but that will do 0-60 in seconds, and reach a max speed of around 110mph. Thats not exactly slow... And even thats a handful sometimes. Do a CBT and get used to riding a bike on the roads. Its very different to driving a car as you have to be so much more alert. A 125 will be plenty while you learn and take your full test. Its the most sensible idea as otherwise theres a high chance of a serious accident. And also, bikes hold their vaule very well, especially 125s, as there is always a constant demand for them. I sold my Kawasaki KMX125 for the same price I payed for it, so you're not loosing anything by taking things a bit slower