If you had a wedding at home, I'm sure most of those stressors would still be there. Since you have guests all over the country, most would have to travel anyways so I bet you would find yourself in a similar situation anyways.
If you are paying for your parents, why are they staying at a different hotel? I would ask them to stay close to you because isn't that the whole idea? Why else pay for them to go?
Keep your chin up. Don't let everything stress you out. All these extras that some of DW brides do are just extras. I decided not to do OOT bags and other little goodies because I didn't want the stress of them and the idea of putting them together didn't sound like fun to me. Do what YOU want to do. You can plan as much or as little as you would like. That's the beauty of a DW. Most people don't go in with all these expecations like they would for a "normal" wedding. This is relatively uncharted territory so most people are just excited to have a chance to do something new.
We don't have many guests going in the end, but we are thankful that we have ANY going. I know it's a lot to ask of people so we are thrilled that they like us that much...haha. It sounds like you wanted a small, simple wedding in the beginning. Why not just keep it that way and let all the stressors go.