I personally prefer floorstanders too as they are stable and not easy to knock off the floor , though a bookshelf also would likely do in a room of that size and help you get better sounding setup for the budget. I think you can evaluate below options
i) QAcoustics Concept 20/3030i (35-36k) + Concept Centre (28K) + 3010i surrounds (18-19k). That totals to about 80-85k ,Ceiling speakers will cost you about 12-16k depending on what you choose (Options are Polk RC60I, RC80i). This leaves you with about 50-60k for the subwoofer, you can go for a BIC PL-200 ii/ Polk HTS-12/ QAcoustics QB12 subwoofer at this budget. If you can extend your budget to 80k for the sub you can also have a look at XTZ 12.17. Personal preference order based on auditions/reviews are XTZ 12.17 > QAcoustics QB12 (Reviews & Aesthetics wise) > Polk HTS-12 ~ BIC PL-200ii
ii) Qacoustics 3050i(60k) , Concept Centre (28k)/3090i (14-16k) , same surrounds and ceiling as option i. You will need to spend atleast 40/50k on a subwoofer for complementing such a good setup. The options are same as above
iii) Kef Q350 (50K) , KEF Q250C(40K) , retain your surrounds from current set and rest options same as above
iv) If you absolutely want a package you can explore the 5.0 package from Taga TAV-606/806 series which are very difficult to get hold of currently. Ceiling and subwoofer options remain the same.
If you are from Bangalore you can also audition the IndiQ lineup for LCR which are supposed to be very efficient and easily driveable and are relatively cheaper , @Prodigy
can give you a better idea about the same. Putting performance aside for a moment, what i like the most is their no questions asked 15 day return policy(though have not heard/seen a single return case), 3 years warranty extendible to 5 years and finally the approachability and helpful nature of the founder Amit.