Sorry you live with a perve! Ahh! That's terrifying!
In regards to the email I guess I am confused as to why you feel you need to send anything to him right now? You say you want to avoid R talks but then you want to send all these deep, personal, R emails. It doesn't make sense to me really. You are bending over backwards so far I'm afraid you are going to snap in half! I hope that doesn't come across to harsh, it just seems a little much given your circumstances. When things are better between the two of you then you can bring up things like skydiving and babies. Not now. It's not the right time. IMHO.
I would really just focus on work, GAL, and moving forward with your own life and try to stop thinking about the best way to make him feel better. Nothing you do or say is going to help him work through his issues. It is something that he needs to tackle on his own, most likely in his cave. So just leave him be.
Writing emails and letters is great but maybe you should just hole onto all these sentiments until you two are in a more stable place and you can express them to him when he will really be able to listen.
I mean I could be wrong, wait and hear from other people. I just personally think you need to back off but it seems like you are always worried about what to say in this email or the next one. Ya know what I mean? There has to be a better, more you centered way to spend your time, even when staying at the house with your hubby.
On a more positive note I think it is a great idea to go dark over the weekend. Even if he reaches out or calls I would keep it light and short like you have been doing while away all this time.