I'm lining up a $1M LOC right now and have absolutely zero need for it.  

It's only worth what people are willing to pay, which is why your house here has been on market so long.If you are absolutely in love with it then snatch it up, love isn't logical and you must act on impulse if it's really love, but if you want to make an investment then run the numbers. 

I am still living at home and I am a full-time college student so the idea of me buying a house in the near future (next 2 years) seems absolutely nuts and honestly it really freaks me out.

My name is Sean Webb and I'm 28 years old and I currently work for ATT, and have absolutely zero experience in Real estate, other than BP podcast lol 👌🏻...but I am I very interested in REI, because as of lately I have come across an opportunity to do some new construction builds on raw land that my family has owned for about 2 decades now.

Absolutely likewise! 

I use this for all of my rental and I absolutely love it.

At the absolute max I will only buy one 4plex (only to house hack and get my foot in the door).  

You are absolutely right, in that your 100% cash payment is essentially equal to 2-3 downpayments, generating a hefty multiple than 1 house. 

That, however, is my approach, and depending on the location, a $500,000 triplex within the city limits is ABSOLUTELY an investment I would consider buying at the moment.

As mentioned by others, a top quality property manager is absolutely critical when buying far away from your home base (as I did).