Order now and decide later... When I ordered my Randall they told me that I could make any change to the order up until 6 months prior to it's delivery date and I did once without penalty. So I would inquire if they still allow that.
Your randall choices are entirely personal but don't worry so much about how leather wears, hard use or not, unless ofcourse you live in a jungle. Personally I'm partial to natural materials and high carbon blades.. I like things that age.. You can get a brass butt on your green mircarta and that should look very nice.
I ended up buying a model 5, 01 Carbon 6" blade, leather border patrol handle, brass but, thong hole, brass/black spacers and a model C sheath.. Went a little nuts on the extras but I'm a weak man and it's pretty......

It is a total user but well cared for, I've had it for three years now and it's been in a half dozen deer an one elk and the odd beef steak. Works really well as a general purpose camp knife..
But if I was to do it over again, I'd buy two knives instead of one.
A Model 1, 01 carbon, 7", leather commando handle, brass rounded butt, brass and black spacres, thong hole and model C sheath.
And a model 25, 6" 01 carbon with a brass rounded butt and brass spacers.
And I would use them both for hunting and camping etc... There are enough randalls in safes.