The biggest factor on how natural breast implants look is how much you have to work with before you start. Going from an a cup to a DD is going to look fake no matter what. Going from a C cup to a D cup however looks entirely natural.
Unfortunately the ones who need implants the most, have the least to work with. Some surgeons will use temporary inflatable ones. This allows you to slowly increase the volume as your body adapts. This allows the skin and chest to adjust to the new size before moving up to the next size as you would naturally. Eventually when you reach the desired size, they are removed and replaced with normal implants.
As for moving the areola and nipple. If you move it, you will end up with scars at best. Some genetic girls have them quite widely spaced as well. The problem we have is implants will exagerate this. Some surgeons counter by placing the implant further apart. This allows proper nipple placement, but you end up with the implant nearly hanging off the side of your chest and absolutely no cleavage at all.
It's a tough situation no matter how you go. The nest bet is wait and see what you end up with and try to be happy with it and maybe an enhancer (pushups, silicone or foam inserts and padded bras will help a lot) rather than surgery.