Alternatively you could wait until we will have the 32Gb version RevPi Core+ ready.
That would be roughly when? We have the same issue here, 4GB really doesn't cut the mustard anymore.
The RevPi Core+ modules are actually more or less ready for sale, but we have still one matter to clarify: We are currently in talks with UL regarding the need of a possible recertification of the RevPi Core 3+ for UL listing. We`re hoping that we don't have to start another full certification process for the Core 3+, 'cause that would definitely slow things down. We hope to get a positive feedback from UL shortly. After that, we are good to go.
Sorry that we can`t give you a specific date today.