Hi I think it looks pretty good, - the faster render times mean you can experiment with  tweaking your lighting more - and positioning objects etc

 

I forget to mention the fall off for the spots - that will solve those ugly overlaps

I guess you know this, but if you select eg all the ceiling lights then you can fiddle with their parameters en masse

 

you also have the option of using anything glows on your rendering camera for a slight bit of filllight when you are rendering with the objects in situ