What ever you may believe c is, it is definned by the scientific community as a constant in a vacum on this planet that is equal to 2.998x10^8 metres per second. Seconds are a measurement of time are they not ?
No.
If you can not accept this fact I suggest you write a new set of laws to explain the basics of physics and chemistry.
You can suggest it. Cutting and pasting formulas from wikipedia doesn't make time magically separate from space. You may as well just as incorrectly say that space appears on both sides of the equation.
There is time dimension as there are wideness and heightness.
3 dimensions of space (x,y,z) and 1 dimension of time (t).
You are mixing dimension about an object and conflating it with properties of the thing the object is in. It's like saying algae is a property of a fish.
Yes it is.
It is not, nor will it every be. You're only off by one word.