Great topic and good advice. Of course, you should be sure that your "modifications" are consistent with your actual intended actions during a fight. IOW, for example, if you don't have a "low ready", don't invent one (adding inconcistency) for the sake of a problematic range policy. For students who use a high-compressed ready who don't have appropriate ranges to practice on, I recommend practicing presentation to the ready DRY. Live fire First Shots can be practiced realistically without violating range rules from the HC-ready (extend, touch, press).
The real problem comes from learning to manage recoil intuitively and efficiently for follow-up shots and extended strings of fire. Obviously, "rapid fire" with airsoft or any other non-live round isn't going to really count. This is an important area of defensive shooting training that warrants seeking out a proper range, if reasonably possible.
-RJP
(jaybet, I was living in New Jersey when I was dialing up BBS's..... if I could remember the names, we could exchange notes!)