Originally Posted by wroomwroomoops

Finally, we are getting somewhere.
Yes, a flip-flop will enable you to go SS and fixed, but if you can't mount a rear brake, you're pretty much stuck with fixed. Fenders, also known as mudguards, stänkskärm in swedish, skærm in danish, they protect you and the rest of the bike flom water and mud splatter as the wheels turn.

For your height, depending on how long your arms and legs are long, a 49 or 50 cm frame would be appropriate, maybe even 51 cm. This is the distance measured from the center of the bottom bracket to the top of the seat tube (on MTB frames, to the center of the crossing of the top tube and the seat tube). If you found a 17" mtb frame comfortable, I guess your road bike size is to be found somewhere between 49 and 51 cm. There are many factors to consider, and frame sizing is a religious argument on these boards (I fully expect to be lynched by part of the crowd after posting this) but I think that 49 to 51 is the ballpark for you. It is critical that you try to ride it or a similar bike before you commit money to it, as things like top tube length are as if not more important than just frame size expressed as the frame size as defined previously.

OK, so do you need fenders, now that you know what they are?