My take on that…
First the silnylon floor in the TT has some PU content making it more "waterproof" than the fly.
As observed by others the PU limits the stretch and somehow weakens the tear strength of the fabric but it is not really needed on the floor (compared to the fly…)
Next I would carefully consider how one can store packs and boots under the Kilo and at the same time have a relatively easy ingress/egress from it
(think midnight call. Add rain and see how the other occupant remains dry when you get out…)
, "the Kilo is functionally freestanding, so it won't collapse if a stake pulls out in the night and I can move the tent around the site easily if I'm not happy with its location",
Really ?
I think that the chance of the Kilo standing up when a stake pulls out is about the same as the DR.
With two stakes in (either the front or the back ones) the DR will stand up just like the Kilo..
As for moving the tent, well once you pick up the Kilo (and similar "freestanding " tents (BA/TN))you still need to place several pegs in to get it to stand up correctly…just like the DR.
Franco

Here is a "fly shot".

