Having eggs removed is an uncomfortable and long process. I did some research into a while ago, when I was considering egg donation (well, I'm not going to use them!) and you're given a lot of hormones to produce even more eggs, which get to the point where you feel bloated and heavy carrying around packed ovaries all day. Then it's an uncomfortable proceedure or two to remove them.
People can overestimate the importance of blood in family relationships. When my aunt and uncle adopted two boys three years ago, they instantly became family - no funny 'eh, I guess you can tell they're different' or feeling like something was off compared to my other cousins and family. If you've a big enough heart, it won't matter if your kids are adopted or not - you'll love your children, no matter where they came from.
It's really something you need to take a long time considering. Personally, I advise you to save the money and time, and begin the next steps of transitioning. You may be desperate to know the feeling of holding your baby in your arms, of comparing their appearance to your grandfather's. But adoption works for many, many people, and you only gain the knowledge that you're giving a child the love and attention it desperately needs. You don't lose anything.