AN SMA PLT ATTEMPTED TO TKOF OVERLOADED. HE DID NOT GET OUT OF GND EFFECT.

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I ATTEMPTED TO TKOF FROM AN UNCTLED 2000 FT RWY IN AN SMA WITH 3 PAX AND APPROX 75 PERCENT FUEL LOAD. I WAS ABLE TO ROTATE AND CLB TO 15-20 FT BUT THEN SETTLED. AFTER THIS SIT FAILED TO IMPROVE; I DECIDED TO ABORT THE TKOF; AND THEN SUCCESSFULLY LANDED ON RWY. HOWEVER; DUE TO SPD; I WAS UNABLE TO AVOID DAMAGING THE ACFT BEYOND RWY END. NO INJURIES. THE PROB: THOUGH I KNEW THAT WITH THE WT OF THE 3 PAX; MYSELF AND THE REMAINING FUEL; I WOULD NOT BE OVER THE USEFUL LOAD OF THE ACFT; I DID NOT TAKE INTO ACCOUNT GROSS WT FACTORS FOR THAT RWY LENGTH. EVEN THOUGH THE RWY WAS AT SEA LEVEL; THE GROSS WT AND THE TEMP WAS SUCH THAT I NEEDED BTWN 200-300 FT MORE RWY. I HAD PERFORMED A THOROUGH PREFLT IN ALL OTHER ASPECTS; AND PERFORMED A CORRECT SHORT FIELD TKOF PROC; BUT HAD NEGLECTED THIS VERY IMPORTANT CONSIDERATION. CORRECTIVE ACTIONS: I WILL MAKE SURE THAT DENSITY ALT; AND GROSS WT LIMITATIONS ARE ADHERED TO FOR ALL RWY LENGTHS. FACTORS AFFECTING MY PERFORMANCE WERE AN OVERESTIMATION OF ACFT PERFORMANCE BASED ON PAST EXPERIENCE; AND BEING IN A HURRY TO GIVE PAX A PROMISED RIDE AND THEN GET HOME.