I'm still bf my 11 month old twins. I nearly gave up at 5 weeks because it was relentless, and there were nights when all I did was feed one, then the other, then the first one again ALL NIGHT. They were the hardest times, but I think at about 8 weeks things settled down.
I was given a c shaped cushion,(not sure if ez 2 nurse) and that worked well when I fed both of them together, but I didn't do that very often, as I didn't enjoy it, and also as they got older and bigger it became difficult to get them into position by myself. I went through a couple of weeks giving them one bottle in the evenings, but they weren't really that interested and it was really to give me a bit of a break more than anything.
I found that I didn't follow the well meant advice from the older generation that I HAD to get them feeding at the same time and should wake one when the other woke, and although it means that I am still woken about 6 times oer night (3 wakings per twin), I can cope better with this as I am still in the spare room with the babies and it means that I can latch a baby on and go back to sleep!
My two were early and tube fed in SCBU and I was advised to express between 2 and 4 am every night, along with having them at the breast and then expressing every 3 hours or so to start with, but feeding was established quite easily. I just wasn't prepared for how full on it was going to be! I was also adivised to swap breasts daily, so each twin had a day at one breast then the following day at the other, and this has worked quite well. I really noticed that one had a better output than the other from the expressing, so I think the swapping was probably right for the babies, but I realise that this is different advice from Mandy21!
In the end, you have to just go with what suits you all the best. But be prepared that at the beginning it is really hard work, in fact looking back, the first 8 weeks were hellish!! All worth it tin the end, though and I can't imagine how time consuming bottles would have been.
Sorry for long and rambling post!