Thank you for your feedback.
Display the item count isn't possible at the moment and not supported by the used GUI elements - at least not like the numbers in the inventory or toolbelt.
Moving the Quickbar downwards was already possible through the mod settings.
Anyway, I'm also using a 21:9 monitor as can be seen on the last screenshot. Adjusting the position wasn't really a good way through the mod settings.
I just uploaded the new version. Now it's possible to move the Quickbar within the game vertrically and horizontally trough a new added GUI interface (see changelog)
I will also have a look for auto placement options, but that can be quite inaccurate as the position is always relative to other elements in the according GUI container. (and afaik there is now way to position a element direct at the lower end of the screen)