Start big or small? - Apartments or Multifamily

[Mason Adams]

Hello,

My name is Mason, I am 25 and I am looking to do my first real estate deal. 
I was thinking 20 Units+ and at this time I have captial for down payment of 100-300K.

My question is; Should I start small 1-5 multifamily properties or should I buy myself an entire complex and move forward from there?
I travel cross country non-stop so I will have to hire a property management company. I have my criteria for what I want to buy, I have read many books. I feel if all my units are in one spot it'll be easier for property management. Should I start off big and trust the property management or should I start small and handle it myself?

I appreciate any insight, suggestions, and ideas you have. 

Thanks!