It sounds like you just need a good cut in now being that the color is good and it is custom. Did they not bleach the knots for you? What is your hair color? Color #1, #1b may not bleach well, but you can try.

At this point I wouldn't worry about the density. 60-65% at your age is generally not too high density, especially with you stating your sides are still good. You should be able to wear that no problem.

Get them cut in, either locally or sending out as previously mentioned and you may be very happy with the results.

Let us know the results.