Century Taper Advice?

Tapering isn't really needed. In a quick glance at your logs I would suggest you try and get one longer ride in each week in the 50-80 mile range. Maybe do 50 this weekend, 60-65 the next, etc.  It appears you are riding a lot but not so long.

Century rides at a comfortable pace is all about being able to deal with sitting in your saddle for 5-8 hours depending on your pace and having your body handle that.

Weekend before your century try and ride 75-80 miles and then ride a couple times that week and last time or two just do aerobic would be my suggestion.

You can run but listen to your body. Does running fatigue you a lot? Not much? I wouldn't do a super long run the few days before, but other than that keep training.

If you're planning on riding the century at an easy pace then there's really no need to taper.  Obviously don't go and do a stupidly hard ride the day before though!

If you want to ride it fast then just knock back the mileage you do in the week before the ride.  For me personally I like to have the a complete day off two days out and then just an easy 30-40 minutes on the day before, just to keep the legs working.

And I'm the opposite.  I like to have the full day off the day before.  I MAY throw in an easy swim.  It's different strokes for different folks, and you just have to find what works for you.  Basically, you just don't want to have put in some intense long run or ride within a day or two, because this doesn't call for a taper, it just calls for being hydrated and rested.  It is a long time in the saddle.  Just rest one of the two days before hand.