Real estate investing right out of high school

[Chance McClellan]

I am 17 years old and already know I'd like to begin investing in real estate right after high school. I work at a grocery store and live with my parents. This allows me to save a good amount of my paychecks. I expect to have more than ten thousand dollars saved by the time I graduate in a couple years. I have been an authorized user on several of my parents credit cards for a couple years so that's helping build some credit history for me. I believe I would like my first purchase to be a small multi family. 2 or 3 unit. I'm concerned that my age and low income (only 12-15 thousand) will keep me from getting approved for a mortgage. Or at least not enough to purchase anything but a rundown shack. Anyone have experience, knowledge or advice for someone starting so young?  Or am I just dreaming? Any advice would be so appreciated. Thanks