Hey, that sounds great! Nice work! It affirms both of you and makes you both feel good, and not like criminals.
Make sure you reassure him that you WANT to trust him and will for those days. You believe in him. That will go a long way...when you see yourself in someone's eyes as a good person, you want to be that. It's great that he cares about going away and what it might do to the R and your mistrust. He knows it's an issue, so take this as an opportunity to work on it. Your idea is great.
When you get back, talk about it again, check in to see how each of you felt...you trusted him, he trusted you,, your fears, etc. That will be nice.
