Consideration 1:
Create and assign a more expensive pricing tier to the fonts that are skinny or have a greater height as they would be likely to use more material when using a fixed width model pricing system and therefore might be more expensive in terms of manufacturing cost.
Consideration 2:
Play with different combinations of fonts and min/max character limits per size to see which ones work well within your set sizes and character ranges. Sometimes even replacing a font might be a better option.
Consideration 3:
Limit certain fonts to only be available for certain larger sizes and above, please view the instructions below.
Instructions to limit certain fonts to a minimum size
Navigate to the admin of Sign Customiser for your store
Click on "Customisers" in the home menu
Click on the customiser you wish to edit
Click on fonts in the left-hand side navigation
Click on the font you want to limit to larger sizes
Scroll to the Limit this font to a size and above (optional) section
Pick the minimum size that you would like your font to be available for.
Click on the Save button at bottom of the form.