Sling,
Before again pointing out specific companies.... and I believe Cineflex are a bit of a one horse option [on size and weight] no matter how good the image ... we are still pottering around trying to find out the task and the kit that may or may not influence the choice of kit from Bellsux.
The mission is all important and until you have some idea on that - and the carrier airframe - it is a bit poinless suggesting whether you offer him advice on a 12, 16 or indeed a 24 inch turret [!!!!] answer let alone how and where it is fitted [permanantly or temporary].
All imagers from all the manufacturers you may care to mention will give you something to look at but until the basics are sorted you cannot even go there safely with the aircraft trimmed and safe to operate!
Just how long is the piece of string Bellsux?