You may not believe this but initially, my 'Subject' was titled: A Few Questions. And inside my Follow-up, I asked, "What are you painting? Are you painting inside or outside? What's the temperature like outside?" Then, I said to myself, why don't I just give some general info (as in my actual follow-up) like: "Just bring in a sample to a paint retailer and let them tell you what you need to do."
You should have read my mind earlier and told me to go w/my initial 'thoughts'! (Too funny, and scary too.) You gave good points that I actually thought of but didn't articulate. :(