Welcome,
I see 2 posts and in the second one the budget has jumped to 75K.
My suggestion:
1. Never be in a hurry. We all do mistakes in impulse buy.
2. Do the investments in stages: meaning in the upgrade path.so follow the steps;
3. Hope you have the flat panel TV.
4. Choose a AVR (100Rms+), BD player and a pair of speaker.
5. Later (depends on your income) add a Sub.
6. Then the center and surround.
This is how I did. Nothing went obsolete (near future) or redundant. But you have to take a call whether you need Floor Stand/Bookshelf, 3D BD player or not etc.., Audition as much as possible before zeroing in on. Believe, Your Golden Ear besides reading reveiwes and referring to Forums like HiFiVision.
Good Luck.
Note: Stay away from HTB.