I think it will be successful, for a reasonable definition of success (e.g. fulfilling a dream of designing a computer and turning a small profit in the process). There is some precedent for this: retro-like computer games, for both modern computers and the original hardware; peripherals that support vintage computers; vintage computer clones that are based upon emulation or FPGA; hobby computer kits offering similar specifications. While none of those examples are the same, they demonstrate that people are willing to spend money to recreate rather than replicate an earlier era of computer history.