Polo Bikes

The issues with this are that the options for non disc hubs (I am going for V brakes) seems a little limited.
Whilst you may lose out a bit in terms of flange spacing/wheel dish, there's no reason you can't use disc-compatible hubs with rim brakes.

Also the rear dropout width will most likely be 14mm
As in the size of axle the dropout is cut for? Why would they be 14mm?