Hi there!
For money remittance, I'm not sure if 1 remittance receipt would be enough. For us, even before we got married, he was sending money to me to pay for our Car loan that was in my name and also for our church wedding expenses. Maybe what you can do is inquire for insurance or if your husband can send you money remittances every cut off. That's what my husband did since 2017 until now (twice a month).
-For the proof of contact, we chose the first convo we had last 2013 when we became bf/gf then next 2014, 2015, and so on, so forth until recently when he went back to canada after our civil wedding. Make sure to choose sweet messages or conversations that talk about being together soon. Something like that.
We haven't used call logs in our application but I think you can include this as additional proof. You may refer to the checklist if they indicated call logs as part of proof of contact. I dont have a copy now so you can double check.