If you're looking to install pickups that have a braided metal cable with a black insulator and one other wire running side the braided wire, those won't do coil splits, unless you have some with a seperate split wire like PRS uses.
SE covers are tricky because at least on the SE pickups I have encountered, the neck pickup is 50mm spaced and the bridge pickup is 52mm spaced. You can find chrome covers from Asia all day in 52mm but finding a 52mm nickel cover is really tough. Gibson makes one (of all people) but the cover would cost as much as the pickup is worth. Google how to add covers to pickups and you'll find several good videos on the subject.