Rack it at the end of the 2 week period. This means siphon off the liquid, leave the nasty crap on the bottom. Try not to splash too much if you can help it.
Leave it alone for 4 months or whatever, then do it again. Depending on how much lees are formed, I would rack whenever they look to be getting too thick ( It's a gut feeling and no measurement to be maid)
As for filtering, See Racking. NO you Don't filter...EVER. You do a good job racking, and filtering will not be necessary.
Seriously. I'm here for BEER
It's Not The Size Of Your Rig That Counts....It's How Often You Use It.