I know it's going to be a grind and I'm all about it

You're going to do so awesome, just stay positive and keep grinding.

Should I get my real estate license and try my luck there or should I keep grinding for 10-15 years until I can become self sufficient with rent?

They have legislation preventing using multi-family properties as short-term vacation rentals and they have other regulations about parking, noise levels, etc.

They find their way under the roof and will raise a family there to your tenant's annoyance as they will make a lot of noises (especially in the middle of the night when everything is quiet) Step (1) Get traps laid. in the attic for 2-3 weeks atleast  Step (2) Seal and caulk all openings

They include but are not limited to the following: Contaminated soilProximity to a hazardous waste siteOil and gas wells located on the propertyHeavy trafficAirport noise and hazardsOther sources of excessive noiseProximity to something that could explode, such as a high-pressure petroleum lineProximity to high-voltage power linesProximity to a radio or TV transmission towerProperty AccessThe property must provide safe and adequate access for pedestrians and vehicles, and the street must have an all-weather surface so that emergency vehicles can access the property under any weather conditions.Structural SoundnessAny defective structural conditions and any other conditions that could lead to future structural damage must be remedied before the property can be sold.

You just have to grind it out and find ways to contact sellers directly like any broker would do (direct mail, cold calling, etc).

Thank you and keep grinding. 

Ignore the noise and work with a competent tax pro

And get ready for the grind.