Hope you don't mind some old married gal advice. I was 30 when I got married and my parents were in the middle of a divorce so I had to pay for everything myself. Thankfully I had a good job but I still shopped the sale racks for my wedding dress. I think I was a pretty bride whether I paid $2k or $200 for my dress. (I actually paid around $80-90) I paid more for the hat then I did for the dress
I didn't feel too bad when 18 years later I gave it to the good-will. My sister did all the flowers and I did spend a lot on the reception for cake, photographer etc. I think you can have just as nice a wedding by not overspending and not having to worry about the bills when you are just starting out. By saving our pennys on the wedding we were able to buy our first house soon after our marriage. My sister-in-law found a place that rented wedding dresses for her wedding. I thought that was a great idea, wish they would have had that when I got married.
I do like dress #3 out of all the choices. Make sure you don't scrimp on the undergarments in that one. I stepped on the front of my dress going up to the alter and I would have pulled that one down and given my father-in-law (our minister) a good shot of the girls.