Well, I've used FCPP for Outlook for some time now. In fact I still have it installed on one of my PC's.
You don't mention "how" you want to integrate the items you listed or the "depth" at which you're looking for concerning integration.
I like some aspects of the "mechanics" of FC but I never have been fond of the "spiritual" connotations throughout the books and even the software. And now that I've used the GTD add-in and have read the book, I agree... I don't need A,B,C,... 1,2,3,... priorities.
I have been with FCPP (FranklinCovey PlanPlus) since it's first version. I have called it quits after upgrading to my last version 2.0. The reason being is the software in every version I have used has had a great deal of "bugs." They have offered few incremental bug fixes. I feel that they are charging the Customer for upgrades that should be patches and or fixes and not sold under the guise of "New" products. The latest version 3.0 is the best example of this unethical practice. A loyal Customer is expected to pay for an upgrade that only has one cosmetic change (Project view of Tasks) and all of the fixes that should have been released over time?
If you get sucked in to the FCPP game, you'll be spending $50 every year for BS upgrades that would be considered patches or fixes by any other software company. With GTD Workflow Process at $10 or even using the GTD add-in, they are solid and rely on the "process" and not the software.
So if NetCentrics never came out with another version of their software... I can use the add-in for every version of Outlook they ever come out with!
I am happy I found GTD and very happy with my GTD add-in and have no regrets abandoning a company who I feel abandoned their Customers (Franklin Covey).
I also feel that the end-users of GTD are more familial and helpful between this forum and the forum on NetCentrics. The tips and hints, macros, that everybody shares in this GTD family are far more helpful and supportive than FCPP forums.
Do a google search for issues and problems with both sofware apps (don't forget to search under "Groups" in Google too). TRY both software apps using their trial programs. I suggest you use the trials for their FULL time trial before making a decision. Before installing any of these apps, make a "System Restore" point with your operating system before installing (better safe than sorry).
And remember that with both sofware apps, how well they install and run is also contingent on how well you have maintained YOUR computer. So if you do run into issues, please examine your setup before blowing your top at the software company in question. System tray applications have a tendency to cause a lot of problems with both solutions we speak of here.
Hope this helps,