Experienced drivers , o/o , and l/p can you help me ??

Name pretty much sums up what I am seeking in the advice dept.

OK I'M NOT A STRANGER TO TRUCKING FROM BIRTH TO 22 LIVED IT (think my first baby rattle was a tire thumper , could explain some of the knots on my head ). MY QUESTIONS ARE AS FOLLOWED :

1) WHERE IS THE BEST PLACE IN THE KNOXVILLE AREATO OBTAIN CDL'S W/ MOST USED ENDORSEMENTS ??

2) IS 50 TO OLD TO EVEN ATTEMPT AN OLD DOG NEW TRICKS ??

3) MEGA FLEETS AND THE KOOL-AIDE DON'T THINK I CAN . WHAT ARE MY OPTIONS ??

4) DMV CLEAN NOTHING ON IT PAST 7 YRS / CRIMINAL RECORD WOULD NEED TO CHECK BUT THINK IT'S PRETTY CLEAN
(don't remember killing anyone lately , out right no in my mind and stupid people well i am in for life )

5) ARE THERE SMALLER COMPANIES OUT THERE WILLING TO TRAIN ?? AND WHO WOULD YOU RECOMEND AS A STARTER TO MAYBE RETIRE WITH ??

OK NOW TO GIVE YOU A BRIEF 25 YR HISTORY ON WORK ..TILL RECENTLY CONTRACTED AS A REMODELING CONTRACTOR TILL ECONOMY TOOK A DUMP IN MY BACKYARD .. HAVE DONE THIS FOR APROX. 15 YEARS . ALREADY HAVE AN S. CORP SET UP , THE DREADED 10 TO 18 HOUR DAYS IS A NORM FOR ME DAILY WITH A DAY HERE THERE AND YONDER .
CURRENT TRAVELING AS A WORKING SUPER DOING BUILD OUTS FOR A SMALL COMPANY AND WE KNOW WHAT TO EXPECT FROM EACH OTHER ( keeping cost down , time management , quality crastsmanship , jobs in on schedule ).
NO MEDICAL ISSUES I AM AWARE OF , DO NEED TO WATCH BP FROM TIME TO TIME . EVEN WHEN WORKING FOR SOMEONE ELSE IMSEEM TO WORK 10 TO 12 HRS A DAY 6 TO 7 DAYS A WEEK .
HOMESTEAD BILLS ARE PRETTY LOW OTHER THAN AN 18 YR OLD WHO STILL HAS THE GLEEM IN HER EYE AS I AM THE ATM OF CHOICE LOL .

OK I THINK THAT IS ENOUGH FUEL FOR THE FIRE , SHOOT IT TO ME STRAIGHT AND THANKS .
I DO KNOW WHAT YOU DO FOR AMERICA DAILY ....FOR WITHOUT YOU ALL OUT THERE WE WOULD NOT BE .........