Take a look at and study successful breeders in your area/enviroment. You have lots of years in front of you, but it takes a lifetime to do it right. Then watch and see what the COMMERCIAL customers of these successful breeders are buying.
I am a believer that you can have both, performance and maternal in the same herd. Just don't go extreme on either. Pay attention to the cowlines of the bulls you are using, make sure the dam of the bull is the kind of cow you want your cowherd to resemble. Never use a bull because he looks good, but his dam has a bad udder or is hard keeping. Then you will make good steers but females you won't want. Make sure the bull you are using is ahead of his class in performance. length, and muscle, but both he and his dam are the right size to keep your cows in check. If you go to big, then your cows will be to heavy and harder keeping, and if they are to small, then you loose performance, length, and if your not careful, muscle. Stay in the middle and you will get great cows, and steers that will be in demand. BUT, what ever you do, make sure your cattle are sound! I see bad feet way to often.