I am trying to set a Custom Font under Customize > Typography.

1. Already created custom fonts variations in Appearance -> Custom Fonts.

2. Set Google Font Geologica (Thin 100) as Primary Font Title

But, appearing too BIG and the title "DESCERNING GREECE" is out of screen!!!
Also no custom font sizing is available on CUSTOMIZING! 

Please, help me set the Custom Fonts and the proper sizes.