I never told our guide anything until we passed ROFR. When I did tell him, he got more then "pissy", so much so that I was shocked. I couldn't believe that he was so downright rude to me. When we first went into tour
DVC, we had never thought about resale. After going home and thinking about it, we decided that we were absolutely sure we didn't really want to buy BWV, and I asked him if there was anyway we could buy OKW, and he said absolutely not. It was completely sold out. He did say that we might be able to add on to OKW after making an initial BCV purchase of 150 points. After we thought about it for a few days, we figured that there had to be some resale people out there whom we could buy OKW from. I never called him back, he did f/u with periodic phone calls to us. I put him off once we figured out the resale thing, and had it going through ROFR, a little nervous that he might see it and exercise Disney's right to buy it out from under us. When we got the call finally that it had passed ROFR, the next time he called, I fessed up and told him that we were under contract for a resale. He said that it probably wouldn't go through, and was very negative. I told him thank you, but it just passed ROFR a day or two ago. That was when he got rude. I pretty much blocked it out, but I do remember that he gave me a major guilt trip and put us down (told us that we were getting him in trouble, and that he works on commission, and he was counting on us, and that we were causing him to not meet his sales quota for the month or quarter or something and that DVC was putting a lot of pressure on him, and it was out "fault"), including putting OKW down in general (told us it was an old resort, not near anything that we'd be interested in, etc.). We had to do what is right for us, and I knew that he'd be a bit upset, but hoped that he'd maintain the "Disney way" and smile and say "good luck" and then just write us off. As you see, he did the opposite of what I expected. I did call DVC and asked to speak to a supervisor a couple of days later to ask him to switch our guide. He asked me why, and when I told him he was immediately apologetic, and said that the guides don't work on commission, and that he was just glad that we were members now, and knew that we'd be happy with our OKW points, blah, blah, blah. All of the things you'd expect Disney to say. Our new guide called us later that day and was gracious and welcoming. I did tell her what the situation was, and why we were assigned a new guide, even though I'm sure she'd already heard. I wanted her to know my side of the story from me. I have never used my guide since then. We purchased our add-on (also OKW) and it was totally uneventful. I don't know why anyone cares about their guide once the sale is complete???
I think that you'll have a much nicer experience then I did, a true "Disney" one, or you can always avoid it altogether and tell them that you aren't ready to buy from Disney now. Yes, I am aware that that is untruthful.
Good luck, I really hope that your contract makes it through ROFR. I've been reading the dismal news for re-sale purchasers tonight, and I'll keep my fingers crossed, and am sending Pixie Dust your way!