Hello back Richard and Curious

I have now taken a big step forward in building my firstling. So. told me among other things that the NEMA steppers usually found on the market have around 10% of steps misses and that the end stop switches' connectors on the PCB boards may not even be connected to the circuitry, I got nervous and hopeless. Even more so when I heard other "premonitions" about the software adaptation to the individual printer's parameters being far from easy or sucessful, re-coding the better way to do it.
But I may have luckily found some pretty expensive but less used NEMA steppers, bought a Raspberry Pi B+, RAMPS 1.3 and Arduino 2560 R3 and other electronics parts, connectors and stuff and will now assemble the circuitry for my Prusa-Mendel or such. Hotbed will be an epoxy-carbon plate. Software for the Raspberry resides on a mysterious 32G microSD card.
Any comments on the selection? I will eventually report on my assembly progress if it befits this thread.
Thanks for your suggestions in the meantime and Happy New Year to everybody.