Hi no worries re: questions, I'm happy to help.
My boobs hardly grew at all during pregnancy or after, mainly got slightly fuller looking it certainly wasn't a problem.
I guess the babies weight would be a good indicator that they're getting enough, also plenty of wet and dirty nappies. You may be advised to offer top ups from the start but have a chat with your midwife. I did as my baby was small and had low blood sugars so we had to be sure she was getting plenty. As time went on I did manage the odd feeds without topping up as she seemed really content after but I probably topped up 9 out of 10 feeds.
I'm trying to remember if I breastfed at night, I think I offered her the breast each feed but if she didn't seem interested(particularly at night) I gave her Aptamil first or any expressed milk I had.
Regrading which pump someone had lent me an old Medela electric pump, very noisy but quite effective, apparently the new Medela swing is really good. I then used just the Avent hand pump which was fine but with all that pumping I was getting RSI so ended up hiring a Medela double pump which was great and meant you could pump 2 boobs at once in half the time! As I was getting some milk it was worth hiring the pump. I did find it exhausting as most feeds I'd offer the boob, then top up, then pump so really time consuming and tiring so my advice is just take it a feed at a time and don't set yourself any unrealistic targets.
Yes I took little pots of milk into the hospital, took them out of the freezer on way to hospital and the staff put them in the fridge, by the time she was born there was enough to give her a little feed after I'd had her skin to skin and put her on the boob. I only had a bout 5-10mls in each pot, so really not big volumes but with the colostrum only small amounts are needed as its so rich and creamy with lots of nutrients and good stuff.
Feel free to ask any more questions, I don't always get on every day but I'll reply as soon as I can