Field of view at 6X is 4.5 feet at 25 yds and 9 ft at 50 yds. If you don't see fur when you first raise the scope to your eye, you will loose critical seconds. I agree with a previous poster that you should try this for yourself before buying.
Also, cost, weight, transmission and glare performance tend to get worse as you go up in magnification range. In particular, a 6-24X scope usually has worse glare at 6X than a 3-12X scope at 6X, all other things being equal. The Vortex Viper PST line doesn't have good glare performance to begin with.
I think you're better off buying only as much magnification as you really need. Backing off to 20X max should give you sufficient magnification for coyotes at 700 yds.