Signs with 5 rows and monospace for big letters from "toilet" Linux command

I'd love the signs to have 5 rows for text instead of 4. Not only could then the text be perfectly centered, but it would also allow to write big letters just like you get them from terminal `toilet` command. Or instead of fixed number of rows, you could start with just one in the center and by pressing Enter you could add more (up to five for example).