I am considering doing all of this (at 41 though, not 38)
How tall/ heavy are you? What Chinese bike do you have and how have you found it? I can’t decide wether to go straight to DAS or just do CBT and have some experience on a 125 for a year or two.
I am just under 6ft tall, around 98kg i could do with losing approx 5kg.
I have a 2016 Lexmoto Venom 125cc. I bought it last year with 7k miles on it, i have done 3k miles on it and owned it for 10 months. Its been completely flawless, no problems at all with the bike, it will do 70mph eventually & is very cheap to run & insure it now has 10k miles on it and its still very nice to ride.
I was in exactly the same dillema as yourself last year. Unsure weather to go DAS or CBT first. However i looked at it this way, if you go straight into your DAS you still have to do your CBT and riding a motorcycle isnt just about keeping balanced. You need to master many skills very quickly, some find it second nature, but some dont, and freak out when they realise they need to counter-steer when at speed and its a bit of a head mess for a few and if you think about it too much it can freak anyone out. By the time you have got the skills needed in your head, your plonked on a bike with 10x the power & twice the weight, and the pressure really ramps up.
Then there is the theory test, you need to pass this and there are approx 600 questions and answers to get familiar with. And you need to book it and pass of course.
I found that doing my CBT and riding on L plates for while enabled me to get comfortable with riding. Every instructor and motorcyclist i have spoken to have agreed that to do CBT and ride a small bike for a while gives you a major riding experience advantage over those who throw a load of £ at it and do the DAS.
Plus i have made a few mistakes on my riding on cbt, and being a smaller, slower bike, overshooting corners and dealing with target fixation is easy to correct. On a bike that is 10x more powerful and 10x more responsive, the risks of overreaction and over correction are far higher, especially with little or no riding experience.
And i am able to build up my no claims. Doesnt matter if you have 20 years ncb on a car, bikes...its starting again.