Blacksmith Thor's Strategy

[Sharpay]

SO I'm making a blacksmith, and I'd like to eventually level her at Thors. So I have a few questions.

1. What gear am I going to need?
I know I'll need a Pasana/Fire Wings. I have a welding mask, and I have Skin Tempering? or whatever that fire-resistant BS skill is called, so will I need a Jakk card as well?

2. What build should I be?
Considering Kasa's and Salamanders (those are the main monsters I'll be killing, right?) need a flee of 300+, should I be going VIT over AGI? Or do they spam skills often enough that it wont be a problem? I do know I'd like to have 110 str (99+11, with job bonus and BS buff) regardless of whether I'm VIT or AGI, but is that too much?

And should I get more INT than DEX? BS has maximize power, so dex isn't really necessary is it? These are the stats I have planned now:

99 + 11 STR
6 + 2 INT
87 + 7 AGI
40 + 12 DEX
1 + 6 VIT
1 + 2 LUK,

OR

99 + 11 STR
6 + 2 INT
1 + 7 AGI
40 + 12 DEX
87 + 6 VIT
1 + 2 LUK

3. What's my strategy?
What monsters AM I going after? I've obviously never been to Thor's so. xD Am I aiming for Kasa's/Salamanders? Just Kasa's? And... what is this "zone spawn" I hear of? Certain monsters in certain areas, like with Dark Frames?

And which is better, Thor 1 or Thor 3, and why?

Thanks for your help and patience.