Yep no worries mate. I'm pretty much the same height as you and I ride a 57. You will find anything in the range 56 to 58 will be absolutely fine and as you get more into cycling you'll find out whether you prefer a slightly smaller or larger frame - it's all down to preference really.
Yes these frames are all suitable for singlespeed/fixed conversions.
In terms of a bottom bracket you want an english threaded one, probably with an axel length of about 110mm and whether it is a square taper fitting or something else will depend on which cranks you wish to use. Somewhere like sjscycles are very goodin terms of selection and price, you shouldn't have to pay any more than a tenner.
Yep no worries mate. I'm pretty much the same height as you and I ride a 57. You will find anything in the range 56 to 58 will be absolutely fine and as you get more into cycling you'll find out whether you prefer a slightly smaller or larger frame - it's all down to preference really.
Yes these frames are all suitable for singlespeed/fixed conversions.
In terms of a bottom bracket you want an english threaded one, probably with an axel length of about 110mm and whether it is a square taper fitting or something else will depend on which cranks you wish to use. Somewhere like sjscycles are very goodin terms of selection and price, you shouldn't have to pay any more than a tenner.
Hope this helps,
Joe