Dear Shubham,
Its no where stated that one has to draft object while keeping in mind certain set criterions.
In general practise, we'll try to cover maximum area as we can so that in future there is no need arises to modify the object clause again as a Company is suppose to function as the object clause says.
There is no problem in drafting the way you have specified. As rightly said by Randhir, the object must include the legal things etc. i seconded the same.
But i would like to advise once again, Think once before you draft an object which creates a limit for you.
Regards