for (the lv 144 one):
that fire will generally hf another char(most likely a fire wit or her pet), with the build, shes not going to be the major damage dealer but can finish off weakened mobs.

if you are comfortable with agi then you can keep it, letheing it to 4 agi might take long now you have 50.

The suggestions of others are correct and the ideal build for pure damage dealers but like you I like my own build

you can check my chars, it might give you some ideas of what you want:
my fire killer is lv 153 rb
STR 550
CON around 130-140
INT 3 (potential lv 3)
WIS 21
AGI 66 (down from 100)

I had her as pk char but i tell you shes great in instances when 500 spd is an advantage, now im working to get her to 50 agi since most of my chars are really fast(also pets). You can say all of my chars are built like this.

What I want: deal enough damage at the same time receive least or no hits at all. If all my chars can move 1st round(team spd or not) I generally finish a lot faster (sometimes can 1-hit mobs in 1 round). Taking in consider that i have good eqs and crit weaps. So this works for me.

Your wis is fine, 42 is better but a couple of sp is not bad. mine is lower because I have a niss to heal my sp so its ideal build for me.

Like I said, your char will mostly hf someone to deal damage, you can make it your victoria, but if you want another damage dealer then the pure attack one is better.

for (rb lv 95 one)
For more damage, your build is fine but you shouldnt expect much if he's low level or on average eqs. Work on these things too and your fire can kill fast with good crit weapons and ride