ATC SCM 7 V.3 and

Tarun's review is always spot on that you might take a look.  I never own either of this but I adore ATC SCM 11 so much and have an eye on those.  I will be concerned with the 7's insensitivity (82 measured which is 2dB lower than the specified) so you might want to also look at Proac Bookshelf alternative which has similar tight / nimble bass. (although they are more expensive)

Op, let us know please the outcome of auditioning.  Maybe I could use it as reference for my quest for scm bookshelf 😀

Since you have mentioned the high damping factor (DF) of your amp and the uncertainty on the 7’s bass performance, the combination of two might produce bass notes on the leaner side and sometimes might affect the midrange too. Remember 7’s freq. response is 60Hz-22kHz at +-6dB already and you could probably imagine how will the bass notes be perceived under well-controlled amplification. I like tight bass but not overly tight because it will sound lean. To give you an example that I do have actual experience with. I own Parasound NC 2125 (DF = 150 at 20Hz) and A23 (DF over 800). Both are class A/B rated 125 wpc into 8 Ohm. From the same speakers (NHT Sb3), the bass with A23 is tighter, cleaner but less weighty than the bass with NC 2125 in an absolute term. The effect on my main speakers, Wharfedale Linton Heritage, is similar. Linton has tighter bass so I match it with NC 2125, and Sb3 is with A23. This works out well for me.

The other coveat is, as Tarun points out, Scm 7 is ideal for near-field, desktop settitng. With even small size room setting, I will consider upgrading to at least Scm 11 ($900 more). The soundstage of Scm is modest, not particularly wide as compared to other speakers with dispersion tweeter driver. So you will need to place them further away to acquire better soundstage. In a room setting with due separation, I am afraid 7’s will probably not perform to your satisfaction.