The Philharmonic AA's are what you want. In addition to being Neutral sounding speakers, they have the most bass I have heard from an under $1000/pair in bookshelf speakers.
Start with a pair and a receiver, I don't know receivers well enough to advise you there, but I would look at refurbs from Accessories4less:
http://www.accessories4less.com/make-a-store/category/avreceiver/home-audio/receivers-amps/home-theater-receivers/2.html?store_price[]=0-300
I think you will be comfortable with the bass of the AA's. They won't shake your room like a sub when Hulk stomps, but they are great for music (and they set off some rattles in my room when Hulk stomps, which surprised me).
The AA's and any decent AVR will give you impressive sound for music.
The surround speakers are not for listening to music (most of us agree, if it is recorded as stereo, you shouldn't really try to add surround processing, it messes up the sound quality). Surround speakers are most commonly used for movie effects - The bullet whizzing past your head (from front to back), or the glass shattering all around you. What this means is you can save some money on the surrounds because their content is not near so critical as music demands from your mains.
I like the idea of the surrounds not being easy to localize, so might suggest something like these bipole (they face two ways) speakers at $160/pr shipped. I also suspect that these are very easy to flush mount on the wall. But check in with us again when you are ready to buy the surrounds, this is just to give you an idea.
http://www.accessories4less.com/make-a-store/item/mordcarn3blk/mordaunt-short-carnival-3-3.5-2-way-bipole-speaker-black-pair/1.html#!more
At this point, you can assess your system and decide when/if you want a sub, center, or both and which you want first.
Aw crap, I just noticed your comment about "in my country"!
That may rule out some of the options I have suggested.
Where are you so we can tailor our suggestions to your country?