A couple of things. Excellent instructions. I have to say if you think it is confusing now, you should have tried to configure it 10 years ago. There can still be issues that allow the postage stamp to be printed. It is a crazy printer. But, finding the driver now, is MUCH easier than before.
One thing that MAY be helpful. Not sure. But, if you turn off the Star Printer, then hold the feed button down, turn it back on while still holding the feed button down and wait about four seconds. Paper will start printing from the Star. Maybe four to five inches. You can take your hand off the feed button, but do NOT do anything. After about 10 seconds, it will print out a lot more. This will be your entire printer configuration.
Just a plug for a print server on a server. You can install the print driver that is correct for the server. Set up the configuration. If it prints correctly, then you can add a network printer to any computer in seconds, and you know it will work. A shameless plug for servers. Yes, you can share a print driver from a client, but it's not quite the same.