Ok after hours of figuring out this stuff I found a way.
Aparrently it is possible to combine maps now in highcharts, however I was unable to get it to work for my exact usecase. The feature seems to require topo maps and it just didnt look right:
https://jsfiddle.net/dorsulak1/me83p2cs/1/
What did work for me was creating a custom map.
This is not an easy process for a first time user. It took me a full day to understand what to do and accomplish the task.
Basically you need to download QGIS, familiarize yourself with all its processes, copy geo.json from highchart lib into it. Add a clipping mask for alaska and hawaii (and figure out how to troubshoot qgis clipping errors), merge clipping layers, and export as new geo.json.
My geo.json is pasted into following example as variable due to attachment limitations.
Final, working solution:
http://jsfiddle.net/dorsulak1/y816saz7/4/