I think that it's really unfortunate that Andrew is so old. I mean it didn't work out the first time when they hired 25/26 year old Tobey Maguire to play Spider-Man, how is it any different hiring 27 year old Andrew to play him? Not just the fans but the studio themselves thought Tobey looked too old to be Peter in SM3, perhaps part of the reason they pulled the plug on SM4.
I mean Andrew doesn't look 17/18 anymore, he looks about 25+ and with Shailene Woodely looking extremely young for her age and being almost 10 years younger than him I wonder if it will look more like her father on the screen. It will give a total ick factor to their relationship in the sequel IMO.