Dear Mikrotik Gurus

For the first time ever my company has asked me to setup a site to site VPN using Mikrotiks. We have purchased 2 x RB750GLs
Site 1 has a static IP
Site 2 Dynamic IP

Site 2 will conenct using SSTP Client to site 1 SSTP Server
I changed the Port to be different then regular 443 so harder for port scanners to find.
Example 43430

Questions:
1. Is there anything I should know about using SSTP?
2. Is SSTP meant for Site to Site or is it OK to use for Site 2 Site???
3. If SSTP is not using port 443 but port is changed is it still encrypted traffic??

Thank you for your time.

All you need to know is in the manual, including site to site configuration example
http://wiki.mikrotik.com/wiki/Manual:Interface/SSTP