Fitting a tailbag

Hello everybody.
Signed up to this forum a few weeks ago to get a non biased look into the chinese bike world.

Lo and behold ive just placed my order in for a brand new pulse adrenaline in white.

I will be using the bike for commuting everyday to work aswell as doing the odd run to the supermarket, chinese and chipshop aswell.
I was just wanting to ask if its an easy job fitting a tail bag to this kind of bike? If so how big a bag can i get on it ( have alot of stuff to carry sometimes)

Was just wanting to ask all you guys out there so i'll know whether or not to bother ordering one in time for my bike being ready to roll away from the shop floor.

Cheers guys
Essexlad:thumbsup: