Welcome to the BB forums! And thanks for the kind words!
There is no such setting for this on BB, but it should be possible via custom CSS. Try the snippet below.
```
.fl-page-bar .fl-icon-twitter-regular:before {
content: '\e086';
}
```
The widget title is an H4, you can change its font size under Appearance > Customize > General > Headings > H4 Font Size. :)
The footer bar can be adjusted under Appearance > Customize > Footer > Footer Layout. It's by default set to 1 Column. Feel free to play around with it!