I decided to order a 53' RG-213 from DX which will connect to a double ended 4" long female which will pass through the deck and then a right angle male to female PL259. I do not have the space to meet the bend radius requirement. Finally a 15' RG213 and again I have to have a right angle male to female PL259 because there is only 2 1/2" behind the radio
Now I wait for the parts
... and next week the fun starts...
Thanks to everyone for their helpful and sage comments.