I need to access ST_StraightSkeleton() function. At the moment i have a Postgresql
instalation PostgreSQL 9.3.4 compiled by Visual C++ build 1600, 64-bit installed via EDB with Postgis 2.1.7 on a windows machine that seems not have SFCGAL installed.

1st What would be my chances of having SFCGAL installed on this installation ?

2nd I'm willing to make a fresh install of another PostgreSQL / Postgis installation (built-in with SFGCAL) if that is less effort, but im a bit confuse on which installations and the order of installation for the .exe files at Postgis site below

http://winnie.postgis.net/download/windows/pg93/buildbot/

I need to access ST_StraightSkeleton() function. At the moment i have a Postgresql
instalation PostgreSQL 9.3.4 compiled by Visual C++ build 1600, 64-bit installed via EDB with Postgis 2.1.7 on a windows machine that seems not have SFCGAL installed.

1st What would be my chances of having SFCGAL installed on this installation ?

2nd I'm willing to make a fresh install of another PostgreSQL / Postgis installation (built-in with SFGCAL) if that is less effort, but im a bit confuse on which installations and the order of installation for the .exe files at Postgis site below

http://winnie.postgis.net/download/windows/pg93/buildbot/

EDIT 1: