Hello,
1) Upload font here – https://prnt.sc/11742lc , then you will be able to fin that font in Theme Options and settings of elements.
2) Please describe the desired result in more detail, provide examples.
Maybe this article will be useful – https://xstore.helpscoutdocs.com/article/89-product-images
3) By default, every Image element has margin-bottom, you can set your own value of it via Design options http://prntscr.com/117475f – http://prntscr.com/11747rh
Size of the image – http://prntscr.com/1174870 – http://prntscr.com/11748g3
Regards