Question on Rogue Feat Order and others

[Darkrok]

I'm doing a 13acroII,6kensaiI,1barb staff user right now. Have THF/iTHF, iCrit Bludgeoning, PA, Toughness, Cleave, and currently Stunning Blow (29 dc with my +8 staff). I plan on having both Stunning Blow and Force of Personality in my final build. FoP will be at least a +6 to my will save and bring the will save even with all the other ones (this is a 13cha start character for the Paladin Dilettante - I wanted meaningful saves on this guy). Lastly, this toon is often solo as it's a toon I'm helping my kid with...when he plays he's solo or small group with his brother and/or me. He's not always guaranteed sneak attack damage.

So my first question is this: Do I put off FoP until later or take it now when it'll be far more useful (a lot of the things FoP addresses will be non-issues at cap and possibly even have it replaced with another dps-oriented feat)?

Second question: For a staff-fighting THF str-based rogue that has stunning blow am I better off taking Opportunist or Crippling Strike first? I plan on getting both but one comes at character level 13, the other one not until CL: 20. Does the choice of which comes first get affected any by the fact this toon probably won't have a radiance weapon (crit profile stinks on qstaves) and won't have a radiance guard right away (non-TR)? Finally, if I swap back to FoP does that change which rogue feat should come first?

[Malithar45]

If you're specifically aiming to increase your Will saves through FoP, I'd at the least consider Slippery Mind then in place of Crippling Strike, even more so since you seem to indicate many times that you'll be without SAs. Not sure how your Reflex save will look, but if just a +6 to Will evens them all up, I'd look into Improved Evasion rather than Opportunist since it sounds like you'll be lacking heavily in that area. <3 Opportunist, but survival > what it offers.

[Darkrok]

If you're specifically aiming to increase your Will saves through FoP, I'd at the least consider Slippery Mind then in place of Crippling Strike, even more so since you seem to indicate many times that you'll be without SAs. Not sure how your Reflex save will look, but if just a +6 to Will evens them all up, I'd look into Improved Evasion rather than Opportunist since it sounds like you'll be lacking heavily in that area. <3 Opportunist, but survival > what it offers.

I'd considered Slippery Mind but that's a fairly big loss on dps. My will save with a +5 item and GH going is probably going to be into the 30's at the cap so it'll be in the range where Slippery Mind would be very useful. If Improved Evasion worked the same way as Slippery Mind I'd consider that one as well but it's just half damage on a missed save which will usually be a 1 (all the saves should end up in the low-to-mid 30's and reflex may be even higher than that). I'll have to think those over ...hard to give up the extra dps though.