One of my friend use a TPlink wireless router ... current price is 3000 tk.
Its range is upto 54 meter. supports static IP/Dynamic IP/PPPOE with user name/pass. It has many other options like advanced security management. It has one WAN port and 4 LAN port so you wont need to buy adapter for PC (for upto 4 PC). This router is fully manageable that means it has built in options that can be moded via any browser.
I am using it right now (borrowed). You can take it for me for a test drive if you want. My final opinion is : this thing is enough for home use.
There is another router available for home users from dlink, price 4500, range 100 meter.
About bandwidth management: I dont understand what type of speed management you want, if you want to share your net line with others, then a desktop software like ccproxy can provide everything you need. The router above has some built in speed management system, never checked that out.