Nice answers above: they are telling you that, whatever you do, you will have to do DEEP into coding.
If you try to use any WYSIWYG software, you will hit a definitive wall: you have absolutely no chance of success.
If you try to adapt these "off-the-shelf" scripts, you will STILL have to ge through the code to make it. Since (I assume) you do not know much about coding, you will realise, as soon as you open ANY of these scripts, that they are written in "chinese"... and you will wonder why! So you will try to "adapt them", adding a line code, removing another... Guarantee: what was meant to work will stop working!
CMS's? Nice as well, but, unfortunately, NEVER adapted to your needs.
Conclusion: of-the-shelf, WYSIWYG, "already-made for you" are a total waste of time, unless you are a proficient coder.
BUT... if you are a proficient coder, you KNOW that you can code the lot, yourself, faster than adapting others work...