You'll want to go to
www.golynx.com . That's their website and will let you plan out anything you want, recognizing big locations and thus not needing to know the exact adress.
You are going on old information, assuming you did a search on here? Well not all is still correct. For instance the 111 no longer goes all the way to DTD, was a pretty big newsitem last year in Orlando. That will now require getting onto the..... if I remember correct 50 (tool on website will tell), transfer at the busstation near the convention center onto the 111 and vice versa on the way back.
For moving along international drive, depending on what your plans are, likes and what not, you might find the I-drive trolley suits you better for that than Lynx. Their website also is very easy to use and good information.
Lynxing to Universal? It has been done before, but takes for ever. Totally NOT attractive, imho. Besides taxi and lynx you have another option; shuttles run by taxi companies. Run at set times and need to reserve ahead of time, but reviews said it's a lot quicker than taking for ever on lynx and affordable. Quick google search on universal wdw shuttle will give you options.
I'm a big Lynx fan, but having said that? No way ever I would want to waist so much time lynxing to Universal for relatively so little savings. The hourly "savings" simply is not worth it, imho.