Perfect!!! I love SIMPLE.
I would also recommend the Hayward ECO Star Variable Speed Pump. I just installed and it was really easy, plus it has it's own controller mounted on the pump or you can mount it on the wall (with the purchase of a cable). I run it for 1hr (to run my pool cleaner) @ 2500 rpms and that = approx. 1,000 watts, then I run it for 9hrs @ 1600 rpms = 200 watts, thats 2 light bulbs, and the pool cleaner still works. The result is i can run my system all day and still save money. Since all you need is to circulate you can run it at its lowest setting (600 rpms) for a long time, this will help in the summer months. The cost for the pump is alot more that a single speed pump but you'll recoup the costs over time. You said you're running your system 3hrs @ 2kw thats 2,000 watts, you could run the ECO Star longer @ 100 watts (light bulb)