Re: not enough bays
Putting an array together is 5 minutes of work. You Google it once and you are set for the next 5 years or however long your setup manages to meet your requirements.
Just knowing "what buttons to push" on an appliance is going to put you way beyond the skill or comfort level of most people. The shiny happy interface (or lack of one) really isn't the biggest problem here.
4 disks just isn't enough. Not enough bays to handle redundancy or parity and hot spares and such.