Mailbreaker coupled with Ice Launcher and Arm Cannon. Neutral Barrier and Stealth Field are highly used
Get some str since the accessories are quite heavy. Always will be having Barrier, Stealth, Hovering, and Suicidal accessories in your inventory (Possibly Accelerator). Get as much str as you can afford if you are going a pure woe build. You will not be killing anyone with any skills except suicide.
Vit/int/dex/luk are all personal preferance. Int doesn't need to be THAT high since you will most likely be wearing a maestro anyway.
I opted to still get some agi, 8x-9x. With +9 Glorious mace, agi food, enriched celermine, berserk pot and AR scroll.... I can hit 188 aspd without medal of honors.
My current mech is sitting at 9x str/agi/dex/vit and 5x int/luk I believe. And I'm heavily leaning towards resetting down to 5x str.