A strong CPU is what you need.
Influence of SSD is highly overrated. Read for instance here: Solid State Disks
Compilation process generates many small temporary files which is exactly the pattern SSDs perform ugly at. I also installed an SSD and it had zero influence on compilation times (Windows, Visual Studio).
Put a sufficient amount of memory (at least 4GB), then go for a powerful multicore CPU. Then code and enjoy.
Having said that I feel compelled to point out that compilation takes an insignificant proportion of development time, which is mostly consumed by thinking. Unless you're compiling something major every few minutes, even a mainstream laptop will be sufficient these days. At least, this is so for me.
If you have extra bucks better invest them in a large quality display. That will definitely provide you with moments of pleasure.