You've got some good advice from prior posters. As a recent straight razor convert, I can tell you that the razors you pick up in the classifieds here (especially from a honemeister) are a great way to start as you get a good quality shave ready razor. Also, if you look in the vendor's corner, holli4pirating has some great new "old stock" swedish razors that he is offering to newer members (if they aren't already sold out). These will come shave ready as well...

As for your other purchases, I started with a filly myself. It's a great starter strop. I think you'll be very happy with it as a starter. The only downside to it is that it has no linen/cotton, but that is a "nice to have," not a necessity.

Good luck with your start to this journey. Read the wiki, and keep us informed as you go. I've found the members to be incredibly helpful answering questions for me as I try to learn this seemingly "aging/dying" skill...