32yo 5'5 130lbs

Just getting my review started with some before pictures. Will give some more info a little later. Surgery is in less then one month! But I've been considering this for several years and finally decided to do it. Once I realized I was comfortable in my own skin and was doing this for me, not because of what others thought. I want to look more proportioned and full, not like Barbie! Had my second consult and decided with 360cc mod profile and possibly full profile.

So for the most part I'm excited and I feel like I live once, I want bigger boobs, let's do this! Then some days I think, is this unecessary? What do most of you think is the average length in years that you can have the implants? I've heard some doctors say they are for lifetime as long as no complications and others say only good for about 10 years?
Other things that have me hung up sometimes is family noticing. I want it to be as natural as possible with a "did she?" appearance hehe but what are some simple comebacks I could use to avoid having to divulge my personal reasons? Thanks ladies!

Made my own sizers at home, 360cc, and think this is just what I need. I've showed a couple people and they didn't notice what was different about the pic LOL so I know they'd look natural. Still feels a little huge on me but I'm sure I'd get used to that and I feel it's very proportionate. :)
Told my sister about my plans and she was very supportive. Feeling good about this! It's not feeling like a foreign idea now, but right around the corner!