im still deciding on the display , most probably I'll use something close to 9-8inch LCD display

I guess 7" even enough. You should leave some space for the bracket you are going to fix it to the helmet.
and thats all i need i suppose , SO here's what im going to do ... Im going to fix the IR illuminators on to a biker helmet
, then fix the CMOS cam somewhere near to that and afterwords fix the LCD display on the helmet shield then connect them both via some kind of circuit or a converter ..
then plug them both into the battery which will be placed at the back of the helmet, and thats about it
Sounds like a good plan.
so any ideas ? comments ?? will that work ?? and Im still a bit unclear about the CMOS cam thing , how should it be connected to the display ?? I asked another person who will be providing tech support , and he's not very familiar with that,
he told me to use a rear cam , MY QUESTIONS ARE .. which is better ? if I chose
either one of them , how should i fix the circuit ??
Your electronic designer must decide on that based on the interfaces you have on your devices. CMOS cam is I2C and most probably the LCD would be parallel. He will have to decide on a microcontroller which has enough ports to handle that.
what kind of INPUT and OUTPUT should the LCD display have ??
Usually parallel interface.
and as another sub question , does the CMOS cam have the ability to take in video feeds from about 10-15m distance ?? IF not , can you suggest anyother cam which would be suitable ?
Since I haven't work with the camera you bought, I can't tell you anything. If a datasheet is available for the camera, just check whether they mention about that. You can also send an email to that company on that.
Once you bought the LCD, I think you have everything you need except the main circuit. You will have to use a microcontroller to connect the I2C CMOS camera to the parallel LCD. If you could ask your electronic designer to submit his plans on the circuit design, we can help you with some ideas.