What is the official advice of the Japanese health authorities? Gloves and mask?
I do not know, but many people there are wearing gloves.
I'm sure you will be well protected by your countermeasures. But why did you stop at gloves and mask? Wouldn't the full suite of personal protection gear used by healthcare professionals be better?
This is a "slippery slope" logical fallacy. Furthermore --
Adding gloves costs practically nothing. It takes only a few seconds longer to put them on. It greatly improves safety. It is cost effective.
There are other cost effective and time-effective steps that anyone can take, far short of your extreme example. Such as cleaning counters and doorknobs often, or even changing your clothes and showering as soon as you come home.
It is not possible to wear a full suite of protection gear. You cannot purchase it -- it is only available to authorized medical personnel. You cannot drive a car, or go to the grocery store with it.
Even if you could get a suite, they are in short supply, so this would hurt the overall effort to fight the pandemic. It would be irresponsible. Whereas gloves are not in short supply, and you can always wash and reuse them. Masks are in short supply, but the do-it-yourself mask is almost as good, and available in unlimited supplies.