Congrats!
I think I'm going to look up my last response to a post like this, cause I don't feel like repeating myself. I have so much advice on this subject that my head wants to explode
(EDIT)
Just a quick one I looked up. 1.50ct round, H color, SI1 GIA certified, wg eng ring with 1/3ct tw: $14,482.00
It's going to be tough to stay at or below 12K with those specs.