Further ensure that your hardware is supported by the openwrt firmware. Using the firmware on an unsupported or work in progress hardware could render the hardware unusable! So make sure you check the Table of Hardware Supported.
The webif that come with the stock whiterussians firmware is really a no no. The only reason I could think of why people uses it is they don’t need the web interface.
Just remember to hard-reset your hardware after all is done to remove unnecessary stuffs from the nvram.