What do you think of this dress? The colour will be navy/dark blue.

I prefer this one but with the first ones 'sash', I just can't get it in the sizes I need as everyone is sold out in the Navy.



What would be a nice alternative? What colour shoes should they were; navy, black or silver? I'm having 3 bridesmaids, would like their dresses to be navy/dark blue (I was going for a grecian style or pixie style, but open to anything). This is my preferred dress but it's hard to get it in the sizes and colour I require, people also keep telling me I should put lace in the gap at the back and have to shorter but not the standard dress length (needs to be covering the knees). My 3 older sisters are my MOH and bridesmaids, ones a size 8 (5'3 height), ones size 16 (5'3) and my MOH is size 20 (5'6).
These are a few alternatives I've been looking at:


Not sure which of the 4 dresses I should go with or if I should get them custom made to incorporate all features (it'll cost more to get custom made though). Or should I keep looking? Was originally looking for grecian style dresses.