I was thinking the very same thing. The T8 fully loaded will be doing 15ly per jump on the average. And making FC's a requirement for reasonable logistics, which is what will happen if the spot is hundreds of light years away, is not going to go down well with the majority of players.
The range of a a shield less type-8, with just cargo racks and no shields or fuel scoop, fully laden, with no engineering, no booster and just an A rated FSD is just about 100ly. This is pretty much worst case. It's more if you fit a shield.
Engineering and an fsd booster pushes it to in excessive of 200ly, without needing fuel.
Add a fuel scoop in either scenario and the distance is somewhat irrelevant.
Given the likely costs of all the materials and goods (we have seen what powerplay 2.0 is like) we can consider that some context for the amount of resources required for colonisation, and thus it's likely to carry a pretty sizable commitment.
10 ly severely limits how many systems are even available to colonise, 100 ly would be doable pretty comfortably by most commanders who (also) have the funds and resources to undertake an expansion into a new system.
Even 50 ly would make sense. 10ly is less distance than some existing populated systems are from each other. Other than starting from Colonia, it doesn't really give people much choice.