We are on the exact position here bud. My best advise is just do what you are comfortable with (FS, BB, massage only, hj, etc), do lots of homework, know how to cover/clean your tracks & most importantly, think about the long term consequences.
I'm sure you don't plan to do this behind your wife's back forever, so always keep in mind your exit strategy. When will you stop/quit pooning? How about STI, what if you get infected? Visiting an MP too often? How about the financial consequences? I'm sure once you weigh the pros and cons, one side will weigh more than the other. Once you find that out, you will know exactly know where you stand.
Best of luck!