1994 Evinrude 150 intruder GLERA Serial#g03618278

On a 1994 Stratos 284 dc

I just bought a CMC PL-65 jackplate for my boat. My pad height was like 8.5"

without plate installed. Haven't installed yet. I was told to set it to 4.5" an go up

from there. My question is will i need a low water pickup? Is this something i can

do myself? Do i have to go to dealership to do? If it is something i can do, I have

solid skills. Is there a kit thats better than others? I looked online and can't find

much? Do I have to get a new lower unit? Any info would help

Thanks

Doug