Lupin Monk Build - Best Background?

I'm working on a Lupin Monk. Eventually, I will go with Warrior of the Open Hand.

I have narrowed the background to two options: Sailor and Wayfarer.

I picked Sailor for the Tavern Brawler feat, meaning more reliable damage (even though Monks get a d6 unarmed strike instead of a d4, rerolling 1s is still good) and another free Shove if the free Shove from Feral Pounce doesn't knock the other guy down.

I picked Wayfarer for Luck dice to supplement the Howl ability, meaning more disadvantage to lock down targets. 

The skills and ability scores are a wash. I'll be taking Dex +1 and Wis +2 either way. Wayfarer gets Insight and Stealth, and Sailor gets Acrobatics and Perception. All of those skills can be covered in other parts of the build (Class, Species).

So, which Feat, and therefore the governing Background, is better for this build? I could go either way, so I'm looking for something a bit more definitive.