You haven't shown any code or explained the details of your obfuscation scheme, and you say your code works, so what kind of feedback are you looking for? On the general approach you've already said a central point yourself:

it's almost impossible to completely secure the code from "too curious" eyes

Yes, knowledgeable people will still be able to get the source of the program, all obfuscation does is make it a little bit more difficult.