>>534933984
Here's the calculator. If you make a copy and just slam 400 wit in there you can see that the chance of gold recovery skills activating is 77.50% At 1200 wit it's 92.50%. If you NEED these skills to proc you'll have to multiply the chance per skill (so for 2 at 400 wit you'd do 77.50% * 77.50% = 60.06% chance to proc both).
You want to set the "Consider Skill Proc Rate" to 1 if you want the stam calculator thing to consider the procs and build in some safety stam to compensate for missed procs. Otherwise it calculates assuming both proc. Same for the "Assume rushing never happens" one.
The calculator is initially set up to calculate a best case scenario regardless of your wit.

https://docs.google.com/spreadsheets/d/17cFLj_L2Qy9vNf2x0Cm7QnakEoxcbsWnRIxrOGqfPBQ/