If you don't use dye, the appearance of frosting may be minimized. White on white makes it less noticeable.
The rough texture on top is fairly normal as well. Wax expands when hot, then contracts as it cools. Small pockets of trapped air near the surface contribute to the bubbly, uneven texture. You can smooth that top out with a heat gun.
Experiment with pouring temperatures to see what works for you. I like to pour soy on the cool side, just before it sets up. But I've also played with pouring hotter. Be aware, however, that the speed of cooling can also be a factor; the ambient temps in the room where the candle is cooling will contribute to either faster or slower cooling.
Lastly, soy can be finicky batch to batch. It's the nature of the beast. Keep pressing on and experimenting! I've been working with soy for a long time...it's do-able! You just can't be a perfectionist in terms of frosting and weird tops, unless you like making yourself crazy.