18" are you kidding? This guy will go at least 22", but won't score over 140 due to the short tines. About a 3.5 y.o.. A nice buck by all means.
No Way will that rack be that big!!! For as far as short tines he is still in velvet with another month and a half fo growing left on him... I did see one the other day that was well over the 200lb mark sporting a heavey 2 foot rack at least and that rack is no where near that big...