Too old to rush?

If you are a guy it is easier. If they like you and you like them, then it isn't a huge deal. Your PC, and the people you hang out with at social events will be primarily 18-20 year olds. If you don't mind that then I say go for it. I would always recommend living the house if you want to get the most out of the fraternity experience. If you already want to limit that interaction, just make sure you actually want to join, and are going to put in the effort to make it worthwhile. Some houses require you to live in, some may waive that given your situation. That would be a question for the individual fraternity. Good luck! Not in a sorority so I would need someone else to give their perspective.

Go for it, great way to make friends fast, you dont need to move in right away especially because you'll be a pledge. you might be encouraged to later but its nothing serious. There's vets that go through the rush process every year, just find a place that you like, be you and bring your experience in life to the chapter, half the kids in greek life don't understand what interest on a credit card is.