Hi Mike;
The nice thing about something like the dxcc is that it won't require
much of a tuner. An internal tuner will be more than adequate. Not
sure how well the internal tuner will work with the g5rv.
As for that poor neglected tower, is it in a position that you can hang
the center of a wire antenna from it? You should be able to manage some
type of pulley arrangement so you don't have to climb the thing every
time you put up a new wire.
--
richard