.75-.82 RB Help

[rainsoaked]

Well Im back and looking for a little help. The original diamond I had picked out had a inclusion that I couldn't get past so I sent it back, I could see it pretty easily in the loupe after I initially found it..I was able to hone in on it after that and so its totally just a mental thing with me...
I then thought I may put off the big question until the middle or end of summer due to a few things going on but now I have had a few subtle hints dropped my way that make me not want to wait
So Im after a RB in the .8 size from WF that can fit into the legato setting ...She wants to have a yellow gold band and rose gold band one on each side of the e-ring for the wedding bands.
Another route I could go is to just get a 4 prong tiffany setting and either save the 700 dollar difference or put it on a better stone.

My original choice...
http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-2728081.htm
http://www.whiteflash.com/engagement-rings/diamond-settings/legato-sleek-line-pave-diamond-engagement-ring-422.htm

I guess I should ask also if you guys think I can do better than the above diamond for that price?
Any help or advice is greatly appreciated...

Thanks.