Thanks for visiting and am glad u liked my setup
Regarding ur requirements, Projector is good as I been suggesting everyone the same, only thing is that there is no point in paying 15,000 rs more than its actual price on Amazon.com
theres no difference literally, that one on Amazon.in is being imported from USA, its same as u getting it from Amazon.com but by paying 15,000 more. Just think about it and place the order. I strongly suggest u get it from Amazon.com, unless there is a problem with payment process like you mentioned that they dont accept debit cards. Just think about it once again, 15,000 is a big amount, u can get ur bluray player and screen both in 15,000.
Bluray Player: I suggest you get a region free player so that it will be future proof, when u want to buy blurays from other regions, like amazon.uk or .de or .com ... the blurays are very cheap on those sites compared to amazon.in.
or else , u can buy the same one which u mentioned, thats value for money I can say.
3D glasses: Any DLP link glasses will work as far as I know, just check back some pages in this thread and u will find some links of eBay and other sites for 3D glasses, if when u click on link and they r not available just search for "3D glasses for Optoma projector" on eBay I am sure there will be many. I just checked on eBay and there are many, just pick one which will suit ur budget.
Screen: I am sure u can get a 90" - 100" screen for that 11.5 distance. Check with distance calculator on projectorcentral.com
heres the link
Projection Calculator Pro - Projector to Screen Distance
Does your laptop have a HDMI out port ? Is your laptop a FullHD resolution laptop or not ? If u have a HDMI port and the laptop is FullHD 1080p then u can get good quality picture displayed. or else u can use RS232 port but the image resolution will be very low like 1028x768
If you are planning to watch movies from ur HDD which are downloaded, then I dont think 5.1 speakers are required. Not all downloaded movies will have 5.1 audio enabled, also as u said about ur neighbors and all other criteria, I suggest you proceed with what Itsme has suggested about the soundbar. If u r planning to watch movies on your bluray player with original blurays or DVDs then you can go for a starter 5.1 Onkyo system with an AVR, they sound really good and will satisfy your requirement and they are budget systems.
Good to know u got inspired
and bought some blurays, but believe me u should not get habituated to buy blurays
just kidding
have fun and buy them as long as u get good deals.
BTW, where are you from ...... if u r from Hyderabad let me know and we can work out a very good deal for you with my Onkyo 5.1 system with AVR
Cheers,
Aditya