Pre-n or not Pre-n

I need to wifi a 110 acre hilly farm to provide access to two other 
sites several hundred yards apart which cannot see each other. (A 
can see B and C, but B and C cannot see each other)  Some foilage 
is obstructing the view from A to B and C, but using a patch 
antenna and gain omni a low speed connection was made during a 
test.  They currently have one WRT54G and a 10db FAB omni.

Do you get any benefit from pre-n equipment when only the AP is pre-
n and the clients are 801.11g/b?  Assuming you do, which of the 
following systems would work better (or make one up yourself)?

1. Put a WRT54GX pre-n AP at point A (are the antennas removable? 
It doesn't seem so), put a WRT54G with highest gain patch antenna I 
can find at points B and C.

2. Put a WRT54G(S) at all three locations.  Put high gain omni at 
point A and high gain patches at points B and C.

Cost is a factor.  The network needs to be reliable and able to run 
voip and hopefully a webcam.  I would like to mesh or run WDS to 
provide general coverage over the area as much as possible, but 
that is more of a side effect.  Providing access to the two remote 
locations is the primary purpose.  I picked the linksys boxes was 
because they are hackable, inexpensive and I already have a few.

Suggestions?



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