Towing post...what do you think?

[axg1040]

I will start by saying I searched and read all I could about the X5 and towing. I just wanted to get some opinions from some members.
I am looking to buy a used 04/05 X5 3.0 and plan to tow with it.

Here is what I plan to tow:
3600lb boat/trailer/gear/fuel/etc.
The single axle trailer has surge brakes.
We normally tow only on the summer weekends to the boat ramp that is about 20 mins away. The roads here are flat and are at sea level.
We take 1 trip a summer to a lake house about 3 hours away.

Is this going to be too much for the X5 3.0 to handle?

Thank you in advance for your input.