Is there anyone have experience with monero?
A little.
is it really there will be no information available over 2000 blocks?
Wrong, Monero node store all data.
is monero wallet really loads 1 month mostly?
Unless the application is really horrible, it should load all data. Otherwise you can't recover your Monero from recovery words.
base the info i gathered there's only address, secret view key, secret spending key, never heard of secret receiving key 
I'm not aware of term "Secret receiving key" either.