Is my room size going to be a problem for speakers?

PLEASE,that room size can be made into a small oasis!
Small Dynaudio’s or Sonus Fabers driven by tubes & a well treated room will put a smile a mile wide on your face!
 As for time to treat the room a half day & good combination of corner tunes,echo tunes & 2'x4'x2" acoustic panels should put you about 90% of the way to end game acoustics..

Small rooms are the easiest to set up for good sound. The choices are endless.

Most important thing: carefully manage the bass produced by the main speakers. You can always supplement them with a sub and get it just right but if too much/too big you can’t get rid of it.

I like kef ls50 or Ohm Microwalsh in small rooms mainly because point source driver configurations work well for soundstage and imaging in tight quarters.

Larger speakers might produce too much bass but otherwise any size is ok in tight quarters assuming enough room for flexibility in placement as needed and as long as not much separation between drivers. You want midrange and treble frequencies to arrive at your ears at ~ the same time and from same location for best detail,  soundstage and imaging.  Won’t happen if speaker drivers are further apart. Smaller monitors are typically all that you will want or need. Large speakers will take up a lot of limited space and be much harder to set up optimally, if even possible.

Again. best to keep bass extension limited in tight quarters by using smaller speakers like with ls50 and add a powered and adjustable sub to get the bass just right.

I use ls50 and powered sub as described in a 12 x 12 room and this is a wonderful setup. In 12x12 room directly above I use Vanatoo Transparent One Encore active speakers with built in DSP and tone controls that are also easy to tune in and get just right.

My room is 11x14 and I have a pair of Magicos S3MK2 and 2 12 inch subs and I love the sound. I have it set up for near field listening. Soundstage and sound quality is as good as I ever could imagine.

I would expect those Magicos to do really well in a small room in that they are three ways with midrange and tweet in fairly close proximity not to mention they are Magicos helped out with not one but two subs. Very nice indeed!