Does this cello have a narrower “waist” and a slightly (not a whole lot) more prominent belly on the front than the other cellos? It almost looks like that in the top photo. Ada, my German Andrew Schroetter I just put Aricore strings on, has the slightly thinner waist and little more prominent belly and she roars with steel core. Way too much. It is hand carved and very different from Belle and Monte. Not sure if it is the shape that makes her roar with the steel cores (other cello with steel core does not roar like Ada did), or the wood, something else, or a combination. It was not a bad roar, just not what I wanted, or needed for playing in my house. 

If it is shaped like Ada, and the shape is what gave it its roar, the Preludes will probably be good. They are too muted on Monte and I find them hard to play on. Of course, I am still learning. I have a hard time playing on them. Maybe it is response? I am not experienced and just figuring out these terms, but I read where some string comments are, “good response”, “quick response”, “slow response”. I would think that would be subjective, though. I think it would depend on cello, cellist, bow and rosin. 

I would just go ahead with the Preludes because, from the picture, she looks like she has the features of my lovely Ada (Ada would not fit in the case I use for Monte and Belle. Bridge was a little high due to belly - we measured her later.) They can always change up the strings, down the road,  if they need to.

My Prelude strings did not seem to last long, they have actually sounded rather dead for about 3 months, and they have only been on about 7 months. It is only played here at home and rotated with Belle and Ada, as I obtained each of the other two cellos. After I purchased Belle at the pawn shop, I brought Belle to lessons and Monte was only played at home. But, I am no expert and maybe I am thinking that as compared to the steel Spirocore and Larsens on Belle, and then later the huge sound from Ada. Again, I am still learning, so my experience with Prelude, is probably not the norm. They did have a nice warm soothing sound on Monte when they are newer.