As I write this, the trampoline has been up 3 days, and it has been a ton of fun.  2 boxes were delivered.  They were very heavy, but you can open them up and remove some items to reduce the weight.  Assembly was time consuming (2 hrs) but very  easy.  No additional tools were necessary...just the provided screw driver and the tool to attach the springs.  Note:  You build the frame circle first.  I did it upside down...then realized I had to flip it.  Not easy to do by myself.  Legs were a tight fit but after adding the mat and springs everything lined up nicely.   

16' is really big but it holds more weight and you will probably end up with more than one kid/adult on at once.  Sturdy frame. Love the enclosure.   Very happy with my purchase.  

A few recommendations:  purchase a way to anchor your trampoline.  Although this is big and heavy, it might blow away in a storm.  Have a plan to anchor it before you set up your trampoline.