I'm in the hospital right now. So, I have limited internet access, and can't do the searching that I would usually do before replying.

IINM, the old Estes Kits were pop tops whereas the Centuri kits split at the 2nd and third stage transition.
The Estes Kits had some deployment issues that the Centuri didn't.

If this is correct... I would recommend building it in the Centuri style.

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Dreaming of making the rockets I dreamed of as a kid (and then some).

"The Guide says there is an art to flying", said Ford, "or rather a knack."
"The knack lies in learning how to throw yourself at the ground and miss."

Launching is Optional... Landing? That Depends on Trees.