If you are based in the UK, I am not sure self funding is possible for a pump. You cannot just buy one like with CGMs. You would need to fund a private endocrinologist as well as the pump and all the set changes and insurance for the pump.
Is a year too early? It comes down to all of us being different. Are you very very comfortable with carb counting? You have to be more accurate with a pump. Are you comfortable with having to revert back to mdi at short notice when under stress? Pumps rarely fail but when they do it is stressful and you have to immediately revert back to mdi, remembering all your doses, Are you happy to carry around pump and mdi paraphernalia most of the time? There can be a lot of stuff to change pump sets and, as I said, you need to be prepared for the pump to fail. Are you insulin requirements stable or are you still in the honeymoon period? Pumps allow you to tweak them but you need a stable start to set up the basal profiles. If you are in the honeymoon period that not be possible. Do you understand how insulin and your body work? A pump is only useful if you understand your diabetes well.
I have found my pump gives me control that mdi never did. However, it takes a lot more effort to do so. As I mentioned, you have to be more accurate with your carb counting. You have to basal test regularly to set basal profiles. The ability to suspend basal when exercising it great if you remember. A basal profile for exercise, ,(or, for women, time of the month) is great but you also have to remember to put it back to standard profile. If a pump fails, you can go high very quickly because you have no background basal at all without the pump.
So, why do you think you would benefit from a pump? Remember, it is just another way to get insulin in you. You still need to carb count, you still need to remember your bolus.
It works for me and I hated reverting to mdi last year. But I was mdilng for over 10 years and I pay very close attention to my levels.