I've just joined the message board this week. I hate wasting someone's time with a repeat question, but my searches aren't bringing up an answer to my situation. I have two boys - 7(soon to be

The placement chart almost puts my upcoming 3rd grader between Bigger and Preparing. He is just finishing phonics. He reads quite well, but I chose to do one more year of our phonics program while doing Bigger. He hasn't done cursive, but his penmanship is incredible when he is doing his best. Grammar and Math put him into Preparing.
The placement chart has my upcoming 5th grader doing extensions in Preparing or CTC.
I am trying to determine whether one or both of my kiddos should skip Preparing to go into CTC which would be an overall match for our semi-Ancients focus in our co-op. The history they will be doing in co-op will be exactly as follows: doing all the veritas timeline cards, memorizing locations of Ancient civilizations geography (fertile crescent to Muslim empire plus countries of Africa, and S. America) and memorizing 24 history sentences including: from 10 commandments/7 wonders of the world/ through 1822. Obviously from this date, I just realized, the history is not only Ancient history.
My questions are as follows: 1) what is your best suggestion for a fifth grader? 2) do you think that the third grader would be o.k. in Preparing? 3) Would you ever suggest for a third grader to do CTC? 3) Can someone point me to threads about organizing the day and getting everything done without taking too long? Especially if extensions are involved.
Thank you,
Sarah