What do you consider to be the parameters or rules of straight edge?

The NO drugs, cigarettes, alcohol or promiscuity pretty much covers it. Keep in mind you will always run into folks who preach "their version" of a practice and if you don't follow "their" version you are NOT right. Look your choices are your choices. You can brand them with a title or not. But if you live your life as you believe is correct then there is NO wrong. A philosophy is just that philosophy. Sounds like you are doing very well there kiddo. Keep up the good work and don't let some other fool tell you you're wrong. Just smile and move on. How you treat others though might be a good addition and how you respond to those others and how they treat you. Is that philosophy solid? Should be.