Do keep in mind that the preferred time for major pruning work is mid summer. In our time zone that is July.
Octoberis one of the rare time slots where the sap flow on two needle pines is low and the tree can be needle plucked.
You can find an exquisite care guide for Scots Pines in the resources section of bonsainut.com.
(Find the download link to the PDF in the upper right corner of the page)