New to Kegging

Hi all,

So with about 100 extract brews under my belt & nearly 40 all grain, I am about to take the jump into kegging.

I have luckily been able to purchase a complete system, with 5 corny kegs & filter included & will hopefully pick up tomorrow.

My questions:

How long do I age the beer in a forced carbonation scenario?

I've read that you want to use about 30PSI for 24hrs, then drop to 20PSI for a further 24 hrs, is this what you guys do?

I will be bottling some from the Keg, what are your experiences from doing this? Good / bad idea?

Should I change the carbonation ritual for those that will be bottled & those that will be poured directly?

Any other hints / tips greatly appreciated!!

Pete