Urgently need a lil info. about IGCSE English Language plx !

[Allah's Slave]

I'll give IGCSE English as a Second language (Extended) 0510, in the coming session May/June 2014. So I'll take paper 2 and 4 which are extended but I'm having trouble in deciding wether to take Paper 5 Oral or Paper 6 Oral Coursework. And Is paper 5 a part of the extended syllabus and has grades starting from A* like every Extended version? So Basically can I take paper 5 if em takin paper 2 and 4 ?

And are Scientific Calculators allowed in the examination hall for IGCSE Physics 5054? Because simple calculators don't have the appropriate functions that are needed for the exam.