that was my exact expression to logan in any case. My main concerns are not due to the mirror cell fitting, because as long as everything fits then its all good. My main thing is about the collimation proceedures.
He has cats eye gear and i recently upgraded the whole secondary system for him with a kit i make because.
A. the SW vanes are too light they flex too much and make it really hard to get fine adjustments. so new 1.5mm Stainless vanes and a 40mm secondary stalk holds everything super stiff.
B. The rear cell needs to have tool less collimation as so you can adjust the fine adjustments needed for cats eye gear. the adjustments need to be smooth and easy this is the only way to get really nice adjustments!
The Novak although strong and definately well designed does not offer tool less design and you would need to use a socket to sort it all out and that could become tiresome!
My preference is for the Orion optics mirror cell. but yeah you have to work with what you have
and i know this due to being a uni student!