Id be hesitant of travelling this far for a 10k. I have attempted one big city 10k and wont repeat the experience. Too much loss of rhythm in the first mile or so, which at 10k pace is harder to pick up plus theres much less time in a 10k to make up a poor first mile.
I think 10k fast times in general are to be found in less high profile events.
Im actually feeling less injured and niggly at the moment than i have done since the London Marathon weekend so am mildly confident i am over the recent troubles. Time will tell i guess. No doubt my mri appointment will eventually come through, i will cancel it, then 24 hours later breakdown!