Just my humble opinion - I would not recommend chains on just the front. Increased traction on just the front could put unnecessary strain on the drive line. Either chain all four or no chains at all.
What do you have against rear chains only?
Still smoother then rearsCONS:
Loose chains getting caught in your steering mechanism causing damage.
Maybe one adjustment needed per year
Rough ride
MUCH smoother then rears alone
Hard on your 4WD
Chains over turfs can't be any worse then ag tires in mud in the summer.
PROS
Cheaper
MUCH
Easier to put on and take off
MUCH
Rough ride on roads makes you go slower