Tacoma to Colorado
I purchased a 2017 Colorado November 15 it is a Ext Cab 4Wd WT with the 3.6 V6 and an auto and the auto locking rear differential.  Due to family commitments and work, part time contracting to CalFire all I have done is install my 2 meter,  tablet, GPS and IPhone mounts in the cab (ProClip products, no drilling); remove the back seats and install a Smittybuilt fridge on one side and Case for emergency equipment and bailout bag on the other.  I have added two Titan 15 gal side mount fuel tanks to the bed, (they worked out perfectly). I also leveled it with a 1 1/2 lift on the front.  I ordered Cooper SST Pro tires this morning in 235/85R16.  
My plan is to add a shell probably a Leer 180, put the ARB compressor under the hood add a light bar to the roof and a Westin hidden winch tray and a 9. 9.5 or 10 winch.  I will need a tire carrier, just looking at it hanging bugs me.  So build that bumper, I really want to see it.  I am currently considering the Wilco base unit in the 2" receiver, the bumper sounds better.  For long term camping or fire assignments I may add a OZRV 2 tent and call it good.
As far as mileage the best I got was 30.8, freeway at night cruise control set to 61 mph for 57 miles.  I average 25.6 for the 1000 miles it has been driven.  I left a Old Man Emu, Aluminess bumper equipped 07 double cab short bed Tacoma with 25600 miles on it and a 4WD camper for this. I am thrilled with the truck so far and am very happy to be simplifying my camping.  
I will take some pictures of where I am at now and post them tomorrow.  More to follow as the changes happen.  I need to change my avatar I see...
I am following your web site and am enjoying your thread here.
Thanks for sharing,   Gfiero