Raw File Processing workflow

Hi sages,begging your advice/comments please.

Owned a D700 since February and i would like to know how other owners organise their workflow.

After a shoot (I only use raw) i have a look at the raw files in "Faststone" and dump all the rubbish and similar images until i'm left with good stuff i want to keep,this then gets put in its own file unaltered.

Next i copy all the files into another folder and process them all in ACR and save as a psd .Then in CS3 i do cropping and sharpening.Only then if im printing the file will i convert it to a jpg.

I know some photographers convert to a dng with an embedded raw file so to "futureproof" the files and if neccessary extract the raw file.

So here's the questions...............Am i doing it properly?When do you use Tiffs? What purpose are dng files for?What workflow do you reccommend?

Ps I shoot as reccommended by Thom , 14 bit compressed lossless.

I look foreward to your replies...............Andy