Getting the best out of your equipment depends on one very important thing that you have missed out: what you want to produce. If you just want to create instrumentals purely with the two synths you have, all of the equipment might even be a shade overkill. On the other hand, if you want to create complete songs with vocals and many recorded instruments, you might be falling a little short. It really depends on what you are planning to use the equipment for. And that will also decide whether you need to invest in more equipment or not.
About laptops/computers. The vast majority of professionals, recording enthusiasts and home recorders have a computer-centric rig. Computers may be unstable and unreliable, but with the right amount of tweaking and maintenance they can be perfectly stable and reliable. Also, software processing allows for a level of flexibility, scalability and convenience that is unparalleled. Saving and recalling your settings, large memories, huge track counts, and software effects are just a few advantages. That is why people use computers for recording. Having said that, though, there are people with a computer-free setup and are happy with it. If you are not going the computer way, you should know what you are missing out but ultimately it's a personal choice.