Um... you do know that Oblivion cant run 300 mods simultaneously right? I think the max you can run is 254, not counting the Oblivion master file.

Actually, you can get around that by merging mods and other tricks.

Wyrebash is your friend. It's a shame the FO3 version Garybash is not as userfriendly, then again it's not that big an issue as Fallout 3 doesn't have as many mods as Oblivion.

Urgh, wish i could be be bothered to use that. Figured out how i was meant to make a bashed patch once, forgot and now cba to learn again.
Anyway, for Fallout 3 I use http://www.fallout3nexus.com/downloads/file.php?id=637 to create merged patches