If i had 2 normal eegs and 1 normal brain mri would that be a fairly good indicator diagnosing of seizures?

Probably, but: may not be enough to exclude epilepsy syndromes, good history and physical examination by a neurologist/epileptologist who would determine if further testing is needed, at times it isn't easy to diagnose or exclude it, so expert input is needed, good luck

To what end ?: Certainly a couple of EEG's could pick up many of the simple seizure syndromes. MRI not so much. The problem is that you can have seizures with normal studies & abnormal studies without seizures. Some centers to a video record EEG for a day/ night to catch an elusive event. The need for such studies would be defined by the type & frequency of events that started the workup.