I have programmed myself in Visual Basic,Java, Pascal,4GL,Modula 2, C++, Python, en now more recently also in Labview. To my opinion, if you have never programmed in other language besides Labview, the learning curve to a languages like C++ will be rather steep. Even with knowledge of C++ you will spend more time in producing code in C++ then making your program with Labview. For the things you want to make I don't see why you could not use Labview. Also I think performance is not an issue for your applications.