Here is my idea, i had to add a few things : there are 3 arrays : “text” the one static mesh added on input, “textsize” the one size of letter added on input and “textref” the one with size references set before start. Each time you add a letter, you need to get the right text size from “textref” and add it to “textsize”. I used 2 meshes one 100 and one 50 (set 0 : 100 and 1 : 50 in “textref” array), and a offset of half the size of current letter was needed. Once again, you’ll have to adapt to your system.
Edit : i suppose that check text length is useless but in case of i didn’t remove it. I did separate nodes for add meshes and set letter, that could be set in a single function to be cleaner and easier with more entries. Even, letter could be set from an array too (by find index refering to entry)