Simple Text - size issues

I'm working on redoing my N7 homescreen(s) and looking at changing my icons to text icons. I'm trying to do this with Simple Text, which I assume is the correct way to approach this. When I select the folder > Edit, tap the icon and select Icon Pack > Simple Text, I get to create my icon. However, the texts is either really small, or if I increase the text size it then cuts off the text (the box it is fitting in is too small).

I'm looking to do something of the size of these: http://forum.xda-developers.com/showpost.php?p=32855447&postcount=1626

What am I missing/doing wrong?

 

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