Any reason you're leaning toward the Artec? It appears to be an entry-level board, as in cheap, not necessarily more beginner friendly. I'd recommend a rocker or hybrid board over full camber if you're starting out. There's a ton of quality boards for steep discounts available now.
I'm your exact heigh/weight and I ride a 153 rocker board right now. I'm sure you'd be happy on a 155/156 if you're still growing.
Go to a store and try on a bunch of boots, buy what fits you the best. Bad fitting boots will ruin your day.