If you would be willing to breastfeed in the first few days your baby would really benefit from your colostrum at least.
You could also look into donor breastmilk.
I think Hipp Organic or Aptimil are probably best, they seem to be the most gentle compared with SMA and Cow & Gate. (SMA made my baby puke loads, in hindsight I'd have switched to Hipp Organic but just assumed it was normal... duh!)
Also I think hospitals like you to bring in powder now so they can check you know how to make it up properly, however the ready-made bottles are better for newborns as they are pasturised/heat treated so completely sterile til opened, so safer in terms of risk of bacteria and upset stomach etc.
Last of all, a newborn's stomach can only hold around 7ml/half an ounce of milk at a time (this increases to around 1oz at day 3-4 and 2oz around day 7) so your baby won't take much in one go and that's fine.