Two questions in one posting:

First: Some people hereabouts (USA) pronounce height with a TH sound on the end. At least one authority says that long ago, height used to be pronounced that way. That makes sense, since we have width, breadth and length. Those last three words are related to wide, broad and long, which have different vowel sounds from width, breadth and length. But height has the same vowel sound as high. Is this coincidence?

Second: What does anybody think expressions like Too big of a house, or not too nice of a day? The word of sounds extra to me. Seems related to OK expressions such as the size of a house. Does the extra of sound substandard? Is it a regionalism? Is it for purposes of euphony?