blacksmith and alchemy skill and stat points

i played for like 2 weeks, so i still newbie. i need help to build stat and skill points for my blacksmith and alchemy.
Open into any suggestion, ideas, and critism.

Primary char : (still newbie)
1h sword with sheild/DW lvl 10 aoe for farming
lvl 70, VIT 20, and the rest all DEX
just normal equipment all +6 (no slot)

2nd char:
base: Mage
lvl: 65
stat points (untouch yet): 180
skill points (untouch yet) : 93
personal stat : tech

3rd char:
base: Archer
lvl 65
stat points (untouch yet): 180
skill points (untouch yet) : 93
personal stat: not decided yet

please help me to:
how to spread stat and skill points to be excellent blacksmith and alchemy?
(i want to make potions, refine, armor 1h, weapon 1h) is it possible?
is it better to make 1 char for blacksmith, and 1 char for alchemist? or is it better to mix it,
i read somewhere about 1 char can be the best refiner and alchemy with full tech, is it true?
i made this 2 free char to support my primary char, so i dont need battle stats or battle skill
any suggestion, ideas, and critism will be greatly appreciate..
thx before..