The main problem with a literal 4E clone is actually writing the damn thing its 1000 odd pages.All right... if you're going to make an alternate 5E then just say that. Or if you want to make a personalized 4E variant then just say that. But if that's the case, then you have no need to worry about the D&D SRDs or the OGL. Do whatever you want with no expectation of publishing or publicizing it and keep it for yourself (which it looks like you, @Zardnaar have already been doing, which is great.)
But my presumption is that if you are coming onto EN World to work with other posters to combine to create a "4E clone" together (and not just your own personal hack)... then you actually have a desire to make it a more universal and faithful port that is OGL compliant and thus able to be "published" like so many OSR games are. And if that's the case, you cannot start the process by introducing all your own rule hacks to get rid of personal bugaboos. Because your personal bugaboos are not going to be other people's, and thus this game you are trying to make will already write off 98% of the people you are hoping to get involved and/or play it.
If you want to clone 4E, start with 4E. Write up the 4E Player's Handbook 1 (all the races, classes, themes etc.) in SRD OGL form so that you know you are compliant to begin with and you actually have a base game foundation to use and publish. Once you've done that... then start talking with other people about slight changes to help the game find a bit better balance.
But if that's too much hassle or you feel like its unnecessary because the game already works as-is... then you don't actually want to clone 4E, you just want to make your own house rules for 4E more well-known.
That is why on my thread I called it clone using 5E, aim at the concepts rather than the exact 4E way of doing it. And why I suggested to condense it and streamline a lot of the fiddly stuff out. Its also why I said get a smaller packet out for people to ry level 1, 5 preconstructed PCs, see how it runs. The more vocal ones will always crap all over it but its not like they're actually doing anything themselves.
Just produce something and build on that.