Hondata is not a piggyback, it is a modification to the ECU itself.

RC doesn't make 410 cc/min injectors.

I certainly wouldn't call a turbo timer "necessary." It just idles your engine for a preset amount of time after you take the key out.

If you plan on going the FMU route, you will need a manifold, turbo, oil line for turbo, wastegate, charge pipes, intercooler, down pipe, dump tube from wastegate to downpipe, upgraded fuel pump, MAP sensor bypass, and a boost gauge would be a good idea. This setup will work decent, but it won't be very precisely tuned.

Instead, it's a good idea to skip the FMU and MAP bypass, get upgraded injectors, and a Hondata.