Tom,

What you are trying  to do  turns the antenna into  something like a top 
loaded Marconi.   The entire feedline becomes the radiating element and the 
102 foot wire becomes the capacity hat.   Some guys do it, but why bother? 
It needs a *very* good ground at the transmitter end.   More than just a 
wire running to a ground rod.   You can make it load up, but how successful 
will you be?

In roughly the same space you can run a shortened dipole that will resonant 
on 160 and give you good results without  trying to reinvent the wheel.

I tried  the g5rv thing a few years ago with modest results in QSO's and 
fantastic results in  RFI due to poor ground.  The loaded dipole I'm now 
running is 124 ft. total with 106  across the top and 18 hanging down from 
one end.   With 100 watts and just puttering around in some 160 contests, 
I've nailed 47 states and 25 countries.   I'm glad I chucked the G5RV.

73 Steve KW3A