Lol yeah, 1 main 3 alts way to go!
Potions and scrolls are the best choice for your main, but I chose potion and stone ;___; Now I kinda regret not choosing only 1 profession for my main character, because:
If you ever get a rider, you have to get the Rider skill. 1 skill gone.
If you ever get a pickaxe, you have to get the mining skill. 1 skill gone.
I think that leaves enough for Tier 1 and Tier 2 recipes of a production skill. Wish I realized that sooner for my potion skill.