Mobile IT Support for Business/Residential possible?

I've been looking into the world of MSP's and frankly every time I think about I start to become worried. I have ultimately decided that I would like to open an IT company that mostly deals with mobile computer repair and selective IT support. I live near a few large cities and I would be willing to either drive or send out my employees to really anywhere in the state(there would be a gas charge). We would also offer small website setup and design, and of course the basics like antivirus. I also plan to have a teaching service available, to show people how to use a specific device. So basically we will do everything that involves a computer or mobile computer device, and some networking stuff, like connecting devices, setting up firewalls and security, mostly basic things. I do have certification in Security+ and Cisco Networking associate. I'm considering the name "Emergency IT" with our main focus being speed to the onsite location. Under no circumstances will I ever open a computer repair shop, to me that is one of the lowest end "IT" jobs available.