It is impossible to say, especially with the new exam System as if you don't pass the appropriate CT exams, the CT exams which you have taken will be rendered completely worthless and you will have to pay:
a) extra Money to Acted for new study material as you won't be a retaker
b) extra Money to Acted as you will have more exams to do (in my case, if I don't pass, I go from having 3 exams to 6)
c) extra exam fees to the Institute as it will take you longer to qualify
As the Institute keeps changing the exam System, it is impossible to estimate anything. For example, there used to be a document allowing you to plan your exams until 2020. However, this has suddenly been removed and a completely new exam Regime put in place from 2019.
To sum up and I know it is no help whatsoever, but to answer your question, it's just like writing a blank cheque.
Good luck