You can put put whatever you want on it. Also note you'll want to add some sort of anti-vibration mount.
https://www.ebay.com/itm/Shock-Abso...871086?hash=item3aeb01dd2e:g:mDkAAOSwfR1ZbYEE
That one weighs in at ~40 grams. The 28 gram figure that DugDog stated sounds about the correct weight for Syma's HD/HG camera and static mount. Keep in mind that the Syma cam does not have a battery so as to save weight.
Looking at this thrust test, it doesn't look good.
Even ignoring the weight of the X8, 796 grams of
total thrust is pretty pathetic. I've got some cheap $6 brushless motors that have been thrust tested ~ 720 grams. But that's for ONE. Times 4 = 2880 grams
total thrust.