Welcome to the forum cousinit75 .
if sign blazer won't output g code, have a look at v carve pro, or aspire. These take your designs from signblazer, or you can create within each, and give you a 3d or 2.5d graphical interface, ie they will show you exactly what you are going to cut and allow you to adjust depths etc. there are less expensive and even free program's which will do similar. For this type of work something like this is essential, it's not like you are making hundreds of one thing, each is different. You can't spend hours trying to write g code for each.
Jim