Ok, here's the thing.
While I'm sure it would look really sexy on you, blonde hair can look great with a LOT of time, effort and money put into making it look nice, or it can look REALLY bad if said time, effort and money is not invested in it.
From memory, your hair is blonde/brown anyway so regrowth is not a big issue, but when you're really poor one week in the future, you will look into the mirror and realise that all the money you spend on trips to the hairdresser, clarifying shampoo, deep conditioners are perhaps not worth the trade-off...
...that being said, if you have heaps of cash to spare and really want to do it, go for it, but don't go too blonde right away. Go to a really good hairdresser and get them to do it gradually over 2-3 visits, otherwise your hair will be really brittle and delicate.
That's my opinion, and I was ALREADY a natural blonde and got highlights...