I picked a setting, this Tacori 2620RDP

And now I'm shopping for a diamond. I did a search for the following;
Less than $4500
Round brilliant
.90 ct or larger
H color or better
SI1 clarity or better
Polish and Symmetry Very Good or better
GIA or AGS cert
That got me 570 results, with at least 50 that have an HCA score of less than 2.
Am I on the right track? What would I look for next to narrow down my choices?

And now I'm shopping for a diamond. I did a search for the following;
Less than $4500
Round brilliant
.90 ct or larger
H color or better
SI1 clarity or better
Polish and Symmetry Very Good or better
GIA or AGS cert
That got me 570 results, with at least 50 that have an HCA score of less than 2.
Am I on the right track? What would I look for next to narrow down my choices?