ALT DEVIATION. POTENTIAL CONFLICT.

Narrative

HAVING BEEN ISSUED DSCNT CLRNC TO 8000 FROM 12000' THE CTLR SAID; 'EXPECT TO CROSS 4000; 40 SE OF FT LAUDERDALE.' THE NORMAL CLRNC IS 36 MI SE OF FT LAUDERDALE. DUE TO THE CLRNC DISTANCE BEING 5 MI CLOSER THAN I EXPECTED; I WAS HURRYING DOWN AND FORGOT TO STOP AT 8000'. THE CTLR ASKED ALT AS I REACHED 7500' WHERE I STOPPED AND IMMEDIATELY RETURNED TO 8000'. CTLR SAID THERE WAS OPP DIRECTION TFC AT 7000' AND THAT WE PASSED AT 3 MI. I WAS NOT INFORMED THAT THERE WAS OPP DIRECTION TFC WHEN ISSUED THE DSCNT LIMIT. IT MIGHT HAVE HELPED. ALSO; NORMAL DSCNT LIMIT THAT AREA IS 7000'; SO I WAS LIMITED 1000' ABOVE NORMAL. I AM NOT AWARE THAT THE OPP DIRECTION TFC DID OR DID NOT TAKE EVASIVE ACTION--I DID NOT SEE. CONTRIBUTING FACTORS: LONG DAY; GET HOMEITIS; DIFFERENT DSCNT LIMIT; DIFFERENT POINT TO REACH FURTHER DSCNT; AND THERE WAS A NON FLYING PLT IN RIGHT SEAT SLEEPING. I OFTEN FLY WITH THIS PLT AS COPLT IN ANOTHER ACFT. THIS COULD SUGGEST THAT I DEPEND ON HIM TOO MUCH WHEN HE IS ACTING AS COPLT. HE HAD NO PLT RESPONSIBILITIES ON THIS FLT.