Pay for CPU, MEM, and network, No.
Pay for used disk space (if applicable), and the subscription, Yes.

how do i choose which pricing plan to use

what do you mean?

you suggested that there are two ways of paying

Pay for CPU, MEM, and network,

or

Pay for used disk space (if applicable), and the subscription,

or both will be charged simultaneously?

correct, i was answering your question for the senario you gave me

ok

thakns

no problem