If the previous tenant didn't complain about the noise, the new tenant may be more sensitive to noise. 

They handle non-emergencies (noise disputes, safe passage into a home to remove items, etc).

It’s an incredibly competitive and challenging market to buy in right now but keep grinding and you will find/create that deal.

In terms of ducks in a row, I think that has a lot to due with what your lease says regarding eviction, sounds like a simple breach of contract to me, if your lease says no smoking and you can prove he has been smoking, it says rent is due on the first and he is late, noise ordinance and he isn't respecting it? 

I kind of feel like I should stay on the grind and not slow down, especially since I'm finally getting somewhere.

This type of minor violations usually won't be enforced unless it be comes a nuisance (too much noise, obnoxious behavior, illegal parking, etc.)

With that being said, keep grinding wholesalers, their advice doesn’t teach you how to make money. 

They should make some noise this year 

You could either do the work or find an investor friendly realtor that puts in the daily grind to get off market properties with numbers that actually make sense. 

It is a grind but you'll develop a somewhat consistent stream of results if you do it on a daily basis.