Should I go, or should I wait?

Nice! The season is early. Big boy will slip up one day... You'll get him.

this Pine is 20 yards from my stand

20-25 yds shouldn't be a biggie especialy if the area is as clear as it looks around that pine. what kind of groups are you getting on targets at that range?

I'm inside 3" at 20 yards, and good up to about 60 yards.

then go stick it, maybe just avoid the area if the wind isn't just right and if you really want that certain buck, I think killing any others will just decrease the odds of getting the one you want. always work the wind and aproach and leave on foot from different directions and times so he doesn't pattern you. keep mixing things up on him. maybe try a mock scrape during the rut. good luck.