Ok....
So I'm originally from the East Coast and have been living in California for 4 years now. I got engaged last month. I told a couple of East Coast friends from high school about the engagement through text message and said "Hope you guys can make it!" One didn't respond, and the other said that it would be hard, but she'd try. Anyway, the list is getting a little tight, and I may need to knock a couple of folks off. We aren't as close as we were 10 years ago. We don't talk on the phone and we see each other once a year when I go home. On the other hand, maybe I can over invite a little because many family members won't be able to afford to come out. However, at $120 a person, I'd hate to foot the bill for going overboard.
Would it be rude not to send the formal invitation when I kinda already invited them through text??