Is This Okay For A Five Year Old Westie?

he is outside or closd off in a room or in a crate from 1030 -3oo o clock on weekdays during school and he is fed iams food half a cup at 8 and another at 4 he is able to reach water outside mainly on weekends hes out side on a tie out (thats what i meen by a outside ) and i walk him alot and he has toys available is this healthy? how would i house train with a life like this? should i keep on like this or keep him as an inside dog?? thx so much any1 who sees pleez answer!!!!