If you can handle the hassles and tenant issues of rental properties, then have fun. I used to have some and decided that IRA's and other accounts are much less trouble. A rental property is not free money, it is a part-time job. The rate at which your PT job is paid depends on the rental and the amount of time you have to put in. I don;t like that most staes the tenants have more rights than landlord and you have no real recourse. Good tenants worth it, bad tenants spoil it for everyone else.
I would max out your pre-tax, to build up some IRA type savings and save the highest tax rate on that money; your tax rate in retirement is most likely less than current. Any left over put into real estate if you want.
I used to have a handle on life....... but it broke!
Semi-Retired 7/1/16: working part-time (60%) for now