i have all the money required to start training, but the rest will come the following months after. is there a preferred or safe range to show in your statement?
What the USCIS state is that they want to see proof of funds for the entire duration of stay (either from you or your sponsor). They generally won't want to see funds that will only keep you for a couple of months as they don't want you to become a burden in the US.
Also remember that you need to factor in insurance and Health/Medical coverage.