Tda, I made the same judgement as it appears you are about to make, regarding a large and great speaker in a small room. Easy to do, since the large speaker not only generally looks better but will probably sound better if you ever get a big room. Like I said in my previous post, maybe try the Guarneri's( either model) and see how these work. When I sold my large speaker and replaced with the G's they were a revelation in my small room. I suspect that you would find that in your small room the G's will sound better than the Anniv's just because of less room interaction and the fact that they physically take up less space.Even with room correction, you will not be able to get the max out of the Anniv's and probably can get close to the max out of the G's. ( Your amp should work fine with both speakers).
Why not try and put a small speaker in your room as a test vs. a large speaker and see what the results are.
Good luck with your choice.