Hi Matthew,
You probably won't like what I'm about to say, but I promise I will try and be helpful. I sense you're not fully committed, and it seems you might give up if things get hard. Please don't; if you can go through the learning curve without giving up, you will succeed and love REI more and more!
I get a sense of your hesitation because of these things you said/how you said them:
"...first job after college" --- Did you want to get into REI earlier and why did you wait until now to start learning about REI?
"...real estate investing as a side project" --- Why did you word it that way, and how much time do people really devote to learning about side projects...what will you devote?
"...like to pull the trigger on something within the next 12 months once I learn more" --- If a perfect deal showed up tomorrow, would you not do whatever it takes to make it happen, and why do you think it takes 12 months to learn more?
"...I'm looking into buy and hold properties but not sure what niche is most appropriate yet." --- What is holding you back, I can already tell you that buy and hold is probably the best bet for you (I can already tell you don't want another job flipping, short-term rentals, old-school landlord, etc.), but why haven't you figured this out on your own yet?
"...is it typically common for newbies to outsource property management" --- What makes you hesitant of property management, especially as a newbie when most people learn best by doing, and how do you know if your property manager is doing a good job/how can you catch them BS-ing you?
"Ideally I would like to be as hands off as possible, is this unrealistic for someone just starting out?" --- If you want to be 100% hands off why not just buy mutual funds, index funds, or bitcoin, why REI?
My tidbits (but don't listen to me; I could be wrong):
I often feel that everyone wants to be a real estate investor, but no one wants to be a self-managing landlord master. You can be as hands-off as you design your rental business to be, BUT you need to know what you're doing first. Note the word "business." Commit fully. I call this the Forever Difference...if you are going to do something and you commit fully as if you are going to do it FOREVER...you will behave and act differently in everything you do. You will probably design every aspect of your rental business to give you Real Freedom.
On the other hand, if you are not fully committed and you treat this like a hobby, everything you do will be shortsighted, or you'll try to cheap out on everything. That's where I see many investors get into trouble... they either try to rush things or cut corners.
Embrace the suck, as we say in the military. lean in and tackle things head-on. Convince yourself you are doing this forever and you will learn everything and design your rental business to run without you one day...but in the beginning, you will have to get your hands dirty.
If you don't like being a landlord, you will never last long-term. In the back of your mind, you'll want to escape if you keep your eyes on the exit. Do not even think about one day selling all your rental properties and retiring! Quit trying to take the easy way out! Don't let the thought cross your mind!
I highly recommend doing your own property management before outsourcing, especially if you only have one rental.
Oh, my advice, set aside as much money as you can and devote as much time as possible to become a landlord master... better yet, a supreme cyborg landlord master—half human, half machine!
Congratulations on graduating college and your first job! Merry Christmas and Happy New Year!