I'm with turbodiesel both on the hot change and the use of oil as solvent. If you want to flush, just pour some diesel fuel through it after the oil has drained some. Diesel fuel is about 25% of the cost of oil and serves as a solvent rather than just oil. Let the diesel then drain for some time before putting it all back together.

Also, having seen the inside of 616 and 617 oil pans I can't IMAGINE how raising the car can drain more oil out of the upper pan.

All that said, regardless of your particular method, you are doing the right thing in changing it hot and taking steps to change it thoroughly. Now that it is clean, depending upon your driving habits, hot overnight oil changes every 3,000 miles or so should keep it clean.

Good luck,