the pool is at full capacity and thus giving this error

try to use another pool...

7000 nonces/min from my r9 280x , it's ok or too small?

the price is tanking already, tnx gpu plotter lol

Something is wrong there.
Here its 137 MB down/42MB up in ~3 days with 20TB+ solo-mining.

the pool is at full capacity and thus giving this error

try to use another pool...

try http://178.62.39.204:8121/

official pool.

Below where it says set reward recipient, fill in your passphrase, and put the pool's burst- address where it says recipient, and submit. This will have a fee of 1 Burst. It should come up with a page of a bunch of details you won't care about if everything is good.
Once the transaction is in a valid block + 3 confirms, you should be able to use the pool. You can check the users list on the pool to make sure that your numerical account id is there(your generate address)

can someone give me the line to start the gpu plotter on win?

gpuPlotGenerator.exe generate folder? 0 10000 4000 8 8

My 7970 does 11.5k~11.7k nonces/min, 7970 is about the same as a 280x.

Try 3072 for stagger size, 128 thread and 8160 hashes.

When you are using AMD GPU plotting , does the CPU still matter ?