Even though it seems like an easy solution and design -- and I suppose it is in terms of execution -- when you plant tightly shaped tree like this in a straight row, every little imperfection becomes blatant... And if you lose a tree here and there, leaving empty spots, that becomes obvious (faulty-looking) too.
I second a mixed native plant (trees/shrubs/vines/plants) wildlife hedge row as a much more Eco-friendly, sustainable and bio-diverse/healthy alternative.
"over the next couple of months" -- will you have time before the ground freezes? Evergreens can be tricky when planted so close to winter deep freeze since they don't entirely go dormant and will need to be protected from freeze/wind burn for which they need to be able to uptake moisture from the ground -- a good drink before the ground freezes. If you are not going to be there and will be leaving them to fend for themselves over the winter months, you may lose some.