My teach used to not let us start texturing till we had plenty of references, light, textures for fabrics etc.
i think your model is for a good start and what you may want to look at now is a camera angle - do you want it to look like a brochure or do want to give it a mood. Think what time of day it is and illumate appropriately - there are tonns of great books out there on lighting, and just from observation the lighting maybe excessive with using a fill light - this part is the fun part, sit with a bunch of ref images to how light fills a room and then mimic those lights, render those lights only and then you get a real sense as to what light does what (keep them on layers so you can switch them on and off. you could create some great shadows from a window what ever time of day it is. Use some softer bounce light. Theres never any harm in ditching the one that won't work and start again, light on light. Check on each render what each light is doing so that you don't end up with an over-exposed render. I dont think that lighting can be done very quickly, to get a really good photorealistic feel will need more understanding on what your light sources are in the room. I would avoid coloring or texturing anything yet- till you have your lighting, becuase that can throw everything off. A quick easy way to do the lighting like this, would be to take one of your renders, the one you like the best or even the original one. Take it into photo shop and try and do a few lighitng passes on your scene, its so much quicker that doing it in maya. you can change saturation, intensity all sorts and then this give you a basic to start with to mimic in Maya.