Bright, I would look into the particulars about the condo. Is his name on your house? Would the agreement be that you keep the house you are living in and he get the condo? These are the types of things that people will want to know moving forward w/the division of property. If his name is not on your house, I would not just sign over the condo, but remind him that both names are on it, therefore you would be entitled to your half of the condo at the time of the sale or him buying you out.
You have a lot of things to figure out, i.e., the business, his mail and other things that you've been handling for him while he's away for work. All of this will need to be sorted out and yes, once a divorce goes through, he will have to do this stuff himself and not rely on you to do them for him.
He probably hasn't gotten all of his thoughts together to have a conversation w/you or he's giving you time to adjust to the fact that he wants a divorce. Bright, as I have pointed out to a few on the forum, aim high for what you want out of the divorce at this time because if you don't, he will change his mind later. Also, he's being fairly nice about things right now, but once you advise him of what you want out of the divorce his attitude may change. So, now is the time to advise him of what you want. Don't just give him everything he is asking for...after all, he's the one that wants out of the marriage, not you.
So, take your time in reviewing the forms he's bringing over, do your homework and above all else, get a good lawyer that understands the laws in Mexico as well as here. Don't allow him to walk all over you during this process.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.