Good deal. Just a couple of comments in safety. Your pot is now much closer to the flame, therefore at full blast, the oxygen is getting sucked out of the room and the flame is spread across the bottom of your pot and it may get RED hot on you, this could also scorch things inside and out, so throw a thermometer in there and monitor your progress. 2) the burner is closer to the metal frame holding everything up. If that metal, particularly the legs get too hot, you'll have a massive dump of hot wort and steel coming at you or at the very least get exciting when your not looking.
This sounds a little worrysome I know. What you are doing is essentially keeping yourself in homebrew until you can upgrade the burner. Just be mindful of the burner making contact with the metal around it when its blazing away.
This of course is a first hand account of how to lose your favorite beer, dent the car, melt your shoe and lose your ability to boil all at once. It was a Thanksgiving nite for me and it was horrible. The very next weekend I picked up some scrap metal, took my burners and built a very sturdy tower around them. Never looked back. But I'll never forget the carnage of that night and how lucky I really was. Did I mentio that when it tipped over the flame was still roaring and pointed directly at my wood storage rack! It could have been the brew that brought the house down!