12 inch subwoofer overkill for desktop setup?

So, I plan to get a new subwoofer for my next upgrade.

Currently using Cabasse Riga with Cabasse Santorin 21 for my desktop near field setup in a 12x10 feet sized room. Since the price of 12 inch Santorin 30-500 is attractive now I plan to get that because it is meant to synergize together with the Riga. There is unfortunately no demo set of the Santorin 30-500 available in my city so I will not be able test it.

My concern is will it be too much for my setup? Or should I just stick with my current sub? Anyone here uses 12-nch sub in near field setup?