Not bad, but you need to be respectful of the other person's body and make sure that you are trying to make the experience enjoyable for them as well. I would not suggest having surgery. There are plenty of people who would readily enjoy what you have to offer, and there are other guys that will work with you until they are able to fully enjoy what you are working with. Surgery should be the absolute last option, especially when it could ruin certain parts of your anatomy.
I would try more actual dating if I were you and have fun. At 18, there are a lot more things coming up for you in the next 5 years that involve much more intense thought than this. Relax and enjoy.