PA32 LNDG VGT INITIATES GAR AND IS REQUIRED TO CONDUCT LOW ALT MANEUVER FOR RWY CHANGE.

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I WAS RETURNING MY ACFT; FROM HENDERSON (HND) WHERE IT HAD RECEIVED ITS ANNUAL/100 HR INSPECTION; TO NORTH LAS VEGAS (VGT). I HAD RECEIVED CLRNC OVER THE TOP OF MCCARRAN (LAS) AND WAS NEARING VGT. I HAD BEEN CLRED TO DSND FROM 4500 FT TO 3500 FT BY LAS VEGAS APCH AND HAD JUST SLOWED ENOUGH TO LOWER MY LNDG GEAR; WHEN I WAS HANDED OFF TO NORTH LAS VEGAS TWR. I WAS NOW ONLY ABOUT 1 MI FROM THE END OF RWY 30R AND 2300 FT ABOVE THE TOUCHDOWN ZONE. BEING AT THAT ALT; I WAS EXPECTING TO BE SEQUENCED FOR RWY 7 (SINCE THE NORMAL RWYS 30L-12R IS CLOSED FOR CONSTRUCTION). HOWEVER; I WAS CLRED TO LAND STRAIGHT IN ON RWY 30R. THE LANCE HAS A VERY GOOD SINK RATE WHEN NEEDED; AND I CAN USUALLY GET DOWN WHEN REQUESTED TO MAKE A STEEP APCH. BUT 2300 FT AT 1 1/2 MI PER MIN IS QUITE A BIT MORE THAN EVEN MY LANCE CAN HANDLE. AS SOON AS I WAS CERTAIN I COULDN'T MAKE THE RWY; I ADVISED THE TWR. THE RESPONSE WAS THAT A GAR WASN'T AN OPTION BECAUSE OF CONFLICTING TFC. I WAS INSTRUCTED TO TURN W OVER THE TERMINAL AND MAKE A SHORT APCH TO RWY 7. ON THE TWR'S PART; THIS INVOLVED TELLING SOME INCOMING TFC TO MAKE A 360 DEGS WHILE I MADE A SERIES OF S-TURNS ABOUT 400 FT AGL (OR LOWER) TO REALIGN WITH THE OTHER RWY. WHILE EVERYTHING WAS SORTED OUT AND THERE WERE NO PROBS; I DON'T LIKE MAKING S-TURNS 200 FT OVER PEOPLE'S HOUSES. MY ANALYSIS IS THAT APCH COULD HAVE CLRED ME TO DSND A LITTLE SOONER; TWR COULD HAVE SEEN MY ALT AND SEQUENCED ME FOR THE OTHER RWY SOONER; WHILE I COULD HAVE STARTED TO SLOW TO VGE (130 KIAS) A LITTLE SOONER (THOUGH MY APCH SPD IS 120 MIAS OR APPROX 105 KIAS AND MY SPD OVER THE FENCE IS 100 MIAS) AND COULD HAVE STATED SOONER THAT I WAS UNABLE TO ACCEPT THE STRAIGHT IN APCH.