Thanks! I added a question towards the end to see how everyone felt about the amount of time and during class also encouraged my students to talk to me about any issues they may have had with the time limits. Most people said that the amount of time was accurate, with a few people having problems here and there. I will, perhaps, increase the amount of time by a bit in the future. I may even use the word limit idea next semester, but to change it now might only confuse a few students.
The feedback was very helpful and I walk away from the experience much wiser. Thanks, all!