How to increase size with multiple inside and possibly grouping with single path replacement?

Question

SVG

How can I increase the size of the path group inside g? And is it possible to somehow change one single path, which is at the end, when using use?

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 2554.6667 1066.6667">
  <image href="img/map/cleanMap.png" width="100%" height="100%" />

  <defs>
    <g id="city-boston">
      <path
        d="M163.936 37H3.936 37Z"
        fill="#940005"
      />
      <path
        d="M417Z"
        fill="#940005"
      />
      <path
        d=".7116 21.6301Z"
        fill="#EC1B23"
      />
      <path
        d=".8784Z"
        fill="#FFC600"
      />
      <path
        d="Z"
        fill="white"
      />
      <path
        d="M79.218"
        fill="white"
      />
    </g>
  </defs>

  <use x="400" y="110" href="#city-boston" style="width: 180px;" />
</svg>