You can wait - I'd set a time limit - 9 months?
The 16 is under rated because a lot of people know nothing other than AR15-isms. The 16 stands on its own.
Besides that you could rationalize the the 16 is a training rifle for your SCAR 17 - you know, less expensive ammo - you will save a ton of money! (Wink - Wink!)
A SCAR 16 in the hand is worth two in the bush?
I do not think you will regret the purchase. Besides, since you have the trigger, you need to accessorize it with a rifle.
There! I've given you all the rationalization so can think of this early in the morning!
Good luck and Merry Christmas!