PLT OF AN SEL SMA ACCEPTED A RWY INTXN TKOF ON A HOT DAY; RESULTING IN A LONGER THAN NORMAL GND ROLL AND MINIMUM CLB PERFORMANCE FOR THE RISING TERRAIN AT THE END OF THE RWY.

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THE WX CONDITIONS WERE HOT (95 DEGS F/35 DEGS C) AND DRY; AND THE WIND WAS 270 DEGS AT 8 KTS. ACFT HVY; LOADED TO 180 LBS BELOW MAX GROSS WT. CONSIDERING THE HEAT; I CALCULATED THE ACFT LOAD TO ALLOW FOR A 'BUFFER' FOR THE DEGRADED PERFORMANCE I WAS EXPECTING. HOWEVER; WHEN WE WERE 1 1/2 HRS LATE ON DEP; AND THE GND CTLR OFFERED ME A RWY MORE CLOSELY ALIGNED WITH OUR DEP PATH; I TOOK IT. WHEN I WAS ASKED IF I COULD ACCEPT AN INTXN TKOF; AGAIN; IN A HURRY TO LEAVE; I ACCEPTED. UPON TKOF; THE GND ROLL WAS QUITE LONG; AND UPON LIFTOFF; I HAD TO INITIALLY CLB AT VX (ANGLE) INSTEAD OF VY (RATE) TO STAY CLR OF RISING TERRAIN. THE TWR ASKED IF I HAD A PROB; TO WHICH I COULD ONLY REPLY TOO HOT AND TOO HVY. I KEPT MAX PWR IN; AND CONTINUALLY 'TWEAKING' THE THROTTLE KEEPING THE TURBOCHARGER AT OR JUST BELOW THE MAX SETTING; AND STILL GOT PERIODIC OVERBOOST WARNINGS AND THE STALL WARNING HORN AS WE HIT THERMALS. WE FINALLY CLRED THE RIDGE LINE S OF THE ARPT; AND I WAS ABLE TO LOWER THE NOSE; INCREASE AIRSPD; AND BEGIN A NORMAL CLB. THE REMAINDER OF THE FLT WAS UNEVENTFUL. LOOKING BACK; I FOUND DENSITY ALT AT THE TIME OF OUR DEP WAS 3050 FT; AND CONSIDERING HOW SOON THE TERRAIN BEGINS RISING AT THE END OF THE RWY; I SHOULD NEVER HAVE ACCEPTED THE INTXN TKOF. REAL DUMB ON MY PART; ACCEPTING AN INTXN WHICH OFFERED 3000 FT OF ASPHALT WITH A 90 DEG XWIND WHEN I COULD HAVE HAD OVER 7000 FT; OR BETTER YET; REQUESTED ANOTHER RWY WHICH WOULD HAVE GIVEN ME 10000 FT WITH A 6 KT HEADWIND.