Just do it, it is certainly less complicated than finding extra money to buy a car, repair a car, pay for gas, insurance...
It seems daunting, because you're coming from a car and cycling is new, but going by bicycle is pretty much the simplest way to get around and can be quite rewarding once you're settled.
So buy the stuff you feel you need, but honestly a lot of it isn't actually required, more like it is acquired to make you feel comfortable and prepared.