What Minecraft 1.12.2 biomes o plenty seed can spawn me near a village and ocean?

As you're using mods, you're best off finding a village near and ocean and then setting that area as the spawn. There's plenty of mods that allow you to change the default spawn such as

You could even use mods like WordEdit to copy and paste a village near an ocean.

Virtually, you just have to create as much worlds possible to find your needs. If you don't want to, why not build a village by hand?