Not to reply to everything you write today, but seconded and agreed. In addition using ftp for administration is a bad idea. It doesn't matter whether nobody knows what ftpd you have, you are still sending your passwords in the clear to your box where anyone can pick them up!

Rather than trying to think up cool security tricks, spend some time learning what people who have been doing this for some time think. I might have given a different list than Ozymandias did, but I don't disagree with anything he listed and he gave you enough reading material for a bit.