Okay got it.
For the crypto payments am not sure that i really need a gateway. All orders will be taken manually and i would like for the option to remain open for ANY crypto to be used. The customer can choose. I will set up the wallet if i don't already have it, send them the address and they can make the donation.
If at some point the payment system becomes automated the gateway will be more valuable. Though my feeling is that i will be avoiding all things automated long into the future. Only in this way can i keep the productions authentic.