A grade, get your non-o before arriving, and get all your facts lined up, including your cash, before arrival.
Then start the plural process of trying to open a bank account, and your immigration application.
Technically, they want three months of seasoned cash, but the Non-o only gives you two months.
Still, if you can open the account, that’s half the battle.
If you want to stream line, or improve your chances of success, I would suggest contacting an agent for some consultative adevice.
Often the advices free, but they will certainly improve your odds of success and getting your retirement visa
@Onestop *****
is the location. I always referred to.