The Bridge running in Python in linux is the biggest problem. Open a serial monitor (for example with putty) and run "top" to see the cpu usage. Try to keep it under 50%.
A few parameters at 5 times per second with Bridge.put() is possible, but I don't recommend it, because of the cpu load in linux. The 50Hz is way too much. Beside that you have also a Python script to send them to a server.
There is about 30Mbyte of fast ram storage in /tmp and more storage if you add a SD memory card. You could do a test to write the data to a file, and upload the file every few seconds.
If you really need 50Hz, then I suggest to try the Raspberry Pi (or the ESP8266, as mentioned).