I think the best solution is right in front of your face. Man up and cut off what you have remaining on top. I know you say you aren't ready for that, but it really isn't a big deal at all. The hair you will be gaining from the system will be better than what you're shaving off anyways. So, my advice for you is pretty simple; lose the pride, cut off whats left on top, and get a normal system. I promise you it will look better than if you come up with some sort of solution to prevent yourself from not having to shave whats left. Don't worry about your pride my friend. You think it'll be hard on you to lose that hair, but you don't get how much pride you will gain from having a full, perfectly matching head of hair on top. Regardless, you're going to look great and feel better about yourself. So cut it off, order a stock unit and then a custom unit and you'll be great.