John Doom said:

This is very interesting: I'm going to link your post in my timeline, so that everyone can read it.

There are useful hints to build the timeline, but you still have ROTJ's rectons like Owen being Obi-wan's brother (George... :\) and so Obi-wan being only in his 60s (which contradicts Tarkin's statement). I'm not sure it can be actually used, but it's definitely a great read. Thanks a lot!

Well, I don't really think Tarkin's statement can be taken too seriously. It's an off-hand remark by a military man who assumes that at this point all Jedi should have been killed in one way or another. After all the Jedi seem to have been deemed outlaws for at least 35 years or so at this point, and he was probably involved in their destruction himself. It could also be a bit of arrogance on Tarkin's part. He clearly has a lot of faith in the Emperor and his ways, (not the mention Vader; who's risky plan does end up getting Tarkin killed).

Also, I don't think you can really use ANH as some sort of SW canon bible as the entire OT was being retconned as they were being made. ANH was originally only supposed to be a stand-alone film, and Anakin and Vader were definitely intended to be two different characters. Heck they even considered making 'Splinter in the Minds Eye' a low-budget sequel to ANH at some point.
So I personally would stick to finding a consistent post OT, pre-PT canon. That's not to say that Owen Lars being Obi-Wan's brother makes perfect sense, but the question should rather be whether the novelization fits in with pre-PT Lucas and Kasdans 'agreed" anon for the original films. I know that doesn't make this any easier, I'm just saying that the scripts from ANH and ESB aren't that reliable when it comes to a consistent pre-PT canon.

Regardless, I'll look through the book some more to see if I find any more interesting details. Regardless of how reliable they are, they do offer a pretty interesting pre-PT EU canon.