"Introducing Pure Mathematics" and "Further Pure Mathematics"?Watch this thread
There are so many applied (option) modules (with OCR MEI there are 14 in total), that it'd be impractical to have them in one book. Mechanics and Statistics are the most common modules, but Decision is considered much easier and less "maths-y" than normal. If you're doing AS Maths and AS Further, you'll need to take three applied modules. You can choose to go with M1/S1/D1, or you can take a different combination such as M1/M2/S1 or S1/S2/S3 or D1/D2/S1, depending on what school you're attending.
Didn't read anything for FM (good luck if you retain enough enthusiasm for that) but you should still be able to get an A* just by studying more or less.