Let us know the outcome after you have received your Krell. I think the improvements would be significant from your current setup with the added quality watts.
Also, I noticed you are using the Kef XQ1 standmounts. Later you might want to add a subwoofer into your system with the additional outputs of you Krell amp. If your room is dedicated, placement of the subwoofer at the corner of the room will not only further reinforce the bass capabilities of the main speakers but make the sound larger and more 3-dimensional. The overall improvement will be quite substantial particularly with small monitors. An option worth considering.
Also, I noticed you are using the Kef XQ1 standmounts. Later you might want to add a subwoofer into your system with the additional outputs of you Krell amp. If your room is dedicated, placement of the subwoofer at the corner of the room will not only further reinforce the bass capabilities of the main speakers but make the sound larger and more 3-dimensional. The overall improvement will be quite substantial particularly with small monitors. An option worth considering.