I didn't follow this thread til now...

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Before anything.... What's in Layers 1 & 2 ... lol. It's driving me batty coz I can't make them visible. If you use CTRL+T, you'll see there's something there. If you don't need them, delete.....
It's been years since I took on something like this.
All printers should have PRINT IN TILES capability. If your printer has that option control, you're good to go. But you should create the image at actual size.
In Photoshop create a new document at 96" x 22" (8 Feet long) . Razterize and merge the Text Layer in your Text file , drag into the new document and re-size to fit the document. Enlarge the canvas size by 2 inches all-around thus you have 100" x 26" - This will compensate for the printing boundary limit home printer's have.
I don't know the controls of your printer but SET the printing output to maximum paper size. This will minimize the empty spaces and minimize the number of prints ....
If possible, set the printer to add crop marks in the print (I'm sure it has that capability). It'll make your job of splicing the pages easier.
To be safe , do a trial print - of several pages - to see if the print tiling will work for you. If not , CANCEL the print. No need to sacrifice more trees for paper.
If the tiling print is acceptable , BE PREPARED ... I estimate over 40 pages of print on this one ...
Do the necessary "puzzle work" to get the text into shape with ol' scotch tape...LOL.
Hope this works out for you.