The best part of it is that they offer my tenants an Auto-pay option, which has greatly decreased the amount of late payments I receive.

If you aren't a Real Estate Professional, I am not sure adding more to your portfolio, with the main intention being tax reduction, is the best option.

Memphis or Little Rock would be great options if you're looking for stable, slow growing areas that will yield more for you monthly.

As a part of the acquisition, all my stock options were accelerated and paid out as cash through payroll.

There is an option to give equity, but I do not love that option in all cases. 

Kenmore, Bothell, Brier, and Woodinville all have great options.

The two most obvious options at hand are : A/ Accumulating capital through my job before investing in real estate B/ Asking for a bank loan that would allow me to invest sooner, saving time, after doing market research Which strategy is better, in your regards ?

Seller financing is a GREAT option if you can get a seller to agree to this (which is not easy).

As a last resort I would ask their realtor if it's an option to have them apply for a down payment assistance grant, instead of you footing the bill.  

Is Homeaglow an option for Short term cleaning services?