Thanks Tamer!
Firstly, that first pic you copied (the schematic view) comes from a site I just happened to find while searching for reference pics of this transport. It's called
www.colonialchrome.co.uk. Do check out the starships section, which features dozens of starships' schematics! Not sure if these are truly accurate, but I bet they will come in handy for ship builders.
My initial thought was to make it in 1:18 scale, but that would mean the ship would be about 44" in length. That startled me a bit and I looked for an alternative scale. The Legacy X-Wing is actually 1:25. Having a transport in scale to that X-Wing works for me. The transport will be 31.5" in length then. Still big enough to house a couple of Stormtroopers and a downsized crew.
And yes, I do plan on adding playability to it, i.e. have sections removable, kind of like this:
However, I really like the cockpit layout shown in the schematics: 4 crew members sitting in line, as opposed to the mixed setup of the 1:72 scale resin model.
As for a timetable.... yeah, I really should figure that out. This is going to be a huge project. If I just work on it randomly, I fear it will take forever to complete it