Data format for Highmaps Drill Down Map

I am trying to create a drill down map where number of companies are represented per state and after the drill down per county. Here is a sample of the data I have available to me based on some other maps I have:

Companies Per State

{
"hc-key": "us-ak",
"value": 1
},
{
"hc-key": "us-al",
"value": 22
},
...

Companies Per County

    {
    "code": "us-al-003",
    "name:": "Baldwin Country , AL",
    "value": 1
    },
    {
    "code": "us-al-039",
    "name:": "Covington Country , AL",
    "value": 2
    },
...

Here are two questions:

1) Do I have enough data points to create a drill down map?

2) If its enough data, how do I adjust this demo to make it work - http://ift.tt/1Dutdou