Definitely go the bilingual route, but it is is hard work, even speaking to your child in your own language does not guarantee they will speak the language- they need reinforcement, opportunity to use it, communicate with others in it.
In truth, I have seen quite a lot of my friends start down the bilingual path and just fall off it, mainly when the children get to school in England and they realise their parent understands English- so they end up replying to the other language in English.
If you don't want that to happen, then you need to be really determined, put quite a bit of effort in, and provide opportunities and reinforcement to practice. If the other parent isn't committed, this could be an issue.
As for the accent, I think some people might be overstating this- my mum's relative have brought all their children up bilingual with an English mother, but I can assure you they have extremely strong accents that make their English somewhat hard to understand. This is quite common, if you don't live in the second language country, you often don't sound local. But so what- being able to speak a second language, even with an accent, is a great gift and that shouldnt' deter you, and some children are really fluent with little accent, it can depend on the child and the level of immersion.