1Mb line is enough for regular usage, but if you are gonna watch videos online, then you hit a snag, especially when you share with 5 others.
* So try to upgrade to 2Mb for better connection.

yes if you are trying to cover a large space a regular router would play a sloppy role at some distance.
* You can replace the antenna of your router with a better powered antenna (about 8db antenna) it will cost about 80 to 120. but make sure you can remove your existing one and the new one fits...
* another way is you could extend your wifi network.. there are few ways to do this, setup a bridge connection, make a LAN, or use a booster.. can't say a price on this, coz everything depends on how large your space and the brands you buy.

If you need more info email me or call me, I can help setting up the network.. [email protected], 4414-2022 ask for 106 (Sat-Th 9am to 5 pm)