I can understand Borderstones comments, it can be somewhat daunting to have 7 puzzles in a row and it could end up being difficult to keep track of which ones have been solved if someone isn't able to do all of them at once like Brink did.
I can also understand how Jessi-Joe might find it difficult to keep up if we solve the puzzles so quickly
If I could offer a suggestion, Jessi-Joe, it would be to go ahead and create the scrambles in advance - have a list that you keep beside your computer - but only post them one at a time. That way, whenever someone answers the current scramble, you have another one ready to immediately post. Plus that might allow you to have the time to make sure all of the letters are represented - 'cause missing letters can be very confusing, as Char said, and in the long run can take the fun right out of the whole process.
As I said, this just a suggestion, ultimately it's your thread and you should do it the way you feel most comfortable doing it.