Only a quick post but if you want to FF then do so - and don't let MW, HV or the BFing mafia persuade you otherwise.
ahere's my answers to your specific questions;
How do I go about formula feeding after giving birth?
Tell MW you want to FF, but take in a premade up pack of formula and a couple of sterlised bottles in case they are arsy/militantly BF.
Make sure you and DH know how to pour milk into bottle and rescrew lid - sounds daft i know but i got it wrong first time around.
do trial runs with sterlising equipment before going into hospital.
At what point do I give the first feed? as soon as you can and do it skin to skin, I'd recomend a 4oz bottle to start with.
The little jar things wiht screw on teats are great if you have them in your hospital.
How do I get the support of staff who seem v anti formula imo.
you may have to accept that you need to work it out yourself. Try and have a sitdown talk with your MW, but if she is very blinkered and patronising then dont' feel guilty about lying to her and just do your own thing when baby arrives.
Insist on being left alone with DH to feed and then they can't 'tut tut' at you.
hospital bag:
4 cartons of premade formula in your chosen brand.
4 4oz bottles presterlised
milton sterlising tablets just in case
2 spare teats sterlised and kept in travel case (avent teats often come with a case to keep them in)
At home
more premade formula, if you get 9oz cartons you can do 2 4-5oz bottles at a time and the second bottle will keep for 24 hrs in the fridge.
you'll need about 8 bottles in total, i'd go for 6 4oz ones and a couple of larger 9oz ones to start with.
Sterlising equipment - I'd recomend a steam steriliser, but failing that boiling things in a pan for 5 minutes is fine.
powdered formula
new clean jug, whisk and spoon for bottlemaking.
bottle warmer
coolbox
I found the cool box invaluable as it functioned as a mini fridge keeping premade milk fresh for 8hrs overnight,
btw i love the fact that people have STILL tried to lecture you on why you should at least 'try' BFing! ignore them! you've made your decision and its very patronising of them to offer unasked for advice and instructions.
If you want any tips or hints or just to ask stuff I've successfully FF for 2 yrs now and DS and me, DS and DH, and DS and GP have lovely quiet bonding feed times