Help me build an autonomous remote wind station + camera
Data transport:

If there is an internet connection within a few km you may be able to access it without vast cost. "Cantenna" type aerials give very substantial gain at very modest cost. You may be able to enthuse some locals with your project to the extent that they will let you use their internet access via a WiFi connection. A range of say 1 km line of sight can usually be obtained quite easily, up to 10 km with some care and maybe 20km plus depending on aerial heights obstructions etc. 

SMS: I suspect that even an "unlimited" SMS plan will not allow the data rate you want. They probably have a "fair use" clause in the fine print. 

Data:  You say "SMS or data" - if you have unlimited data you can probably achieve what you want. Your 76,800 pixel per frame will translate to 100 kiloBUTE or more. You have allowed one bit per pixel - OK only for sending monochome black and white on/off pixel images. Even a byte per pixel will be on the low side without encoding. Fortunately, coding and compression is your friend.
 Using JPG compression on a randomly chosen image sized to 320 x 240 I got
 JPG_Quality / Size kB
 60 ... 61 kB
 70 ... 63 kB
 80 ... 67 kB
 90 ... 73 kB  

ie compression does not affect data size vastly in this example. In some it may but chances are a files size in the 50 kB - 100 kB range will be OK.

AND:  For your application , if you are willing to put modest processing power at the transmit end, you can just send "differences" in the image when they occur.
 This will vastly decrease you mean data rate as, most of the time, there will be little new to send if the beach is empty. You'd want to exclude waving tree branches and rolling waves  from the areas considered dynamic :-).



Realtime wind speed and direction: That  depends on how real you want the real time (1 second, 10 seconds ...?) and what resolution you want. If you were happy with 5 kph increments in wind speed you can handle 75 kph in 4 bits (16 steps of 5 kph starting at 0). By using logarithmic compression or an arbitrary scale you can get greater top end velocity in 4 bits. But 8 bits will handle all you sensibly need (eg 0-255 kph in 1 kph steps ! :-) ).
4 bits:  ...0 1 2 4 6 8 10 15 20 25 30 40 60 80 100 BIG! 
or eg ...   0 1 2 5 10 15 20 30 40 50 60 80 100 125 150 Die
Or to suit.

For wind speed and direction SMS may suffice if you don't mind having the data with good resolution but poor "latency".
 eg say you have 120 bytes/SMS available.
 Assume 1 byte each for speed and direction  . 
120/2 = 60 data pairs/SMS.
 That's an hours data in one SMS with 1 minute sampling once an hour.
 Or A minute's data with one scond smpling sent once per minute.

One SMS/minute = 1440/day - they may have something to say.
 One SMS/hour = 24/day = likely to be acceptable. 



Your example PV panel seems very expensive for what you get.
 Slightly more DIY effort will give you  substantially more energy for less $.  

The offered panel appears to be amorphous silicon or may be CIGS and just may be monocrystalline silicon.
  Don't buy amorphous silicon - efficiency is low and output decreases with time more rapidly than crystalline silicon. (Stabler Wronski also feature but it's bad without them :-) ).

If the offered panel is CIGS or CdTe ask re GUARANTEED lifetime with full replacement if it fails - early ones have poor lifetime.
 Best = mono-crystalline silicon. Glass panel with Al frame and heat laminated in industry standard manner will give 20+ years of operation. I have a still working 30+ year one. 

Available Watts from a PV panel

How to guesstimate the mean wattage available OUT of battery for a PV panel + battery system.   

Wout ~~= Wpanel  x SSH / 30   .... 1  


Wout = continuious average available power.
Wpanel = panel max watts properly loaed in full sunlight
SSH = Hours of equivalent full sunshine per day.
The factor of 30 is a guesstimated constant based on their being 24 hours in a day and allowing for PV to battery losses and battery storage losses. 


Rearranging:  

Wpanel ~~= Wout x 30 / SSH   .... 2

Mean daily Sunshine Hours in Toulouse can be found here and is as little as 1.2 hours per day on average in December and 5+ hours/day from May to August.

So in mid winter if you want 1 Watt continuous your PV panel will need to be  

Wpanel = Wout x 30 / SSH   .... applying 2 above.
 = 1 x 30 / 1.2 = 25 Watts!  

And your 3 Watt advertised panel will supply
 Wout ~~= Wpanel  x SSH / 30   .... applying 1 above.
    = 3 x 1.2 / 30 =~ 120 milliWatts continuous.

More anon ...