I really want to try BF this time (no3 due in July) but I have a few personal issues that I really cant talk to RL people about, (that is part of the issue) so I was hoping you could help me find some answers 
Smoking...a couple a day after a long feed obviously outside well away from DC. I know its weak and pathetic that i can stop for whole pregnancy but i am weak and pathetic with serious MH issues so will end up back on a couple a day...Is BF a no go from the start?
Drinking...Not a big drinker, but looking forward to the odd glass of wine on a summer evening. would i have to pump and dump after a glass? How long would a glass of wine effect milk for?
Hiding...I was thinking about ways to be descrete and i mean from very newborn even in the house in case of visitors, (yes really am that crackers) i prefer the idea of sling feeding to the aprons to give me that barrier to the outside world, have looked at baba slings, really like the look of them but worried about being a larger chested lady, anyone any experience of not suffocating their baby in a sling when you have big boobs?
Really appreciate any info you could offer :)