Topband: antenna question

[mike l dormann]

i am going to operate on the shore of Puget sound, with an inverted L on
both 80 and 160 meters, using two amps, one for 80 and one for 160. each
will have an exciter and a vfo and a key.

i was thinking of running two wires, one 133 feet long for 160, and one
66 feet long for 80, while using the same radial system, bare wires out
into the water. at high tide the antenna will be 3 feet from the water's
edge, up on the bulkhead.  i hope to have the vertical portion about 50
feet or a bit higher.

from a contest point of view, think of this as SO2R, a NC57 on 160 and an
HQ120 on 80, both heavily modified, with separate receiving antennas.

my question; will i have much transmitting antenna interference, if i can
get a few feet of separation between the two inverted Ls?

thanks

mike w7dra