Would my code be uncrackable, and would the inconvenience of solving it if it is be worth more than the code itself?

I devised a code that includes all 26 letters of the alphabet, 22 extra characters that are diphthongs, digraphs, and sounds. There are another 11 that are individual words that I find to be used most common in things I write, 10 for the different numbers 0-9, 9 symbols for a few different kinds of punctuation, and 18 that are what I consider extra or filler characters that have no corresponding meaning or anything. Would it be indecipherable at the moment? Would a vigenere cipher with a code word/phrase be worth the effort of making it? Would making a 2304 character substitution with each character in the vigenere cipher increase the security? Would it be worth it to do all of this? Not that I have any reason to other than simple curiosity, but would all of this together create a code/cipher that was impossible to crack? And if it was, would I receive the same or similar results from a vigenere square with just the 26 letter alphabet with different characters for each letter in the individual lines of the square?