Help - maiden name as middle name?

Hello! I am pregnant with a boy, we have settled on his first and last name, but am struggling with his middle name.

Conrad will be his first name, and after a long discussion with my husband, we agreed his surname would be used for the babies last name, think Stojanović.

I have kept my surname, with my last name being similar “De Lorme”. I want to have my last name incorporated into his name somehow. We would double barrel if our last names weren’t so long. Is it too much to make it his middle name? Should he also have an additional different middle name as well?

In future if we have a girl, we will give her an additional middle name - but both first and second names will be short single syllable names.

Conrad De Lorme Stojanovic - I sway between thinking it sounds like a strong name to too much. Can he have an additional middle name? Help!