I had a drug free natural birth and had hoped to only be in hossy for 2-3 nights max.... unfortunately we had alot of attachment and BF'ing issues right from day 1, which meant I needed a fair bit of attention every time DD needed a feed (she had a very weak suck).... DD also lost too much weight by day 3 and they asked for me to stay 2 more nights to see her gaining some weight (i had to express and do top up feeds 3hrly round the clock!) so I stayed all up 5 nights.... I was so ready to come home by the end of it!!
And my hospital food sucked!

In all honesty, if I was you, just wait til you have bub, see how well bub is feeding first and how confident you feel THEN decide when you will leave..... you don't really know how the birth and feeding is going to go yet so try not to think too far ahead.... that's just my advice to you from my experience anyway.

I hope your BF'ing journey kicks off to a great start and you have a wonderful birth!