Is a map wit 774 teris too big or should i fuse terris that say north blahblah and south blahblah

Hard to say really... I don't know what 'teris' are to help you...

territories

this is the map http://upload.wikimedia.org/wikipedia/commons/a/af/Nigeria_Local_Government_Areas.png

think of making a map out of that but 774 might be much

774 would definitely be a lot, especially if you are new to making maps (don't know your level of experience)

You will have a lot of trouble with the southern territories due to their size.

that map is kind of shapeless. youd have to shake things up a little to make it interesting: geographical features, metabonuses, etc. i would also rearrange the bonuses to make the map a little more even. combine some territories and bonuses, and split others into two.

first of all the state will not be the only bonuses
secondly my brother a computer expert is helping me
thirdly am not rearranging the country i will fuse some territories but no rearranging
i might put rivers in it.

that map would be a good one for a Hunt Scenario..
also I think making a second version of this with adding in cities with the format of the poland Big style could be cool, depending how the cities are situated..

the cities will be far too small to add and will be long and tedious also as i recall the poland one isn't as big as this map.