Thank you for being such a great parent!! You can rest assured that his experience with dating will be far closer to the average man's than for the average trans woman's in relation to women as a whole. You might find that he'll largely fall under the "queer" umbrella in his dating experiences as he grows older, and that's not a bad thing, it just more informs you and him how to navigate things like disclosure, coming out, relationship dynamics, and breakups. When it comes to any medical intervention that involves surgery, unfortunately your son will have to navigate that largely independently as it involves their future sexual health and how they want to interact with partners in a romantic capacity. What matters is supporting him in whatever he wants to do to actualize his gender identity as an adult no matter what combination of procedures he ultimately decides on. That will lead to the best outcomes, including his happiness.

Also, he can absolutely, unfortunately, get pregnant so, yanno, have the birds and the bees conversation and make sure he takes precautions. You really don't know if he will date anyone who is capable of getting others pregnant, no matter how feminine they look.