I'm 23 with $15k extra with 7 months of open time to grind

[Isaac Measures]

Hey everyone, this is my first post so I'm hoping I do it correctly.

As in the title I am a 23 y.o. college student (5th/last-year) and I have $15k to "play" with. I will graduate in May with no debt, a Computer Science degree, and a ~$70k/yr offer from a company I worked for as a school-required internship. Throwing $15k at this would leave me with roughly $5k (plenty to live on until graduation) and I fortunately am a part of an upper-middle class family that would definitely help me with co-signing/personal loans if need be.

So that is the basis of the situation. An extra, possibly superfluous, detail is that I detest 9-5s. Coming out of college I will already have 3+ years of industry experience and sadly, that is the main lesson I have learned from that experience. I include that to convey that I am very willing to take risks/live uncomfortably for a prolonged time if it means setting myself up to avoid a desk 9-5 as much as possible.

The question:

I am looking at buying a 3-4 unit (largest I can) multi-family and house-hacking. This would be to start my investing journey, but I am passionate and would love to open a path all the way to apartment complexes. Financing something that large from the get-go appears to be borderline impossible however (especially for someone my age), so that is on the horizon.

Does mine seem like a good plan, or does anyone have suggestions on changes? I figure I essentially have a free $15k, no debt, a $70k job post-grad (If need be. I will hold out hope that I manage to avoid it until the minute I need to sign my acceptance letter.), and 7 months of free-time to set myself up in the best way possible to get out of a 9-5.

(I want to specify: below I am not asking for a mentor. Simply for advice from someone who may know how to find one)

My secondary question is how I would go about finding a mentor? I feel having one would allow me to greatly increase the speed at which I can jump into investing and I can possibly be beneficial through my work ethic and willingness to take on more risk, but I'm not sure how I would go about finding someone, or if this is even realistic to attempt for someone in my position.

Thank you if you read this far and for any advice people are able to offer.