Question: Which sentenses are correct? (word order with may)

1-3 are all correct and are used commonly but they differ slightly on the tone of focus.
(1) May bago akong kotse. [focus on kotse]
(2) May kotse akong bago. [focus on bago]
(3) May bagong kotse ako. [focus on ako]I'm not sure about 4&5 but what I consider that sounds natural and follows the focus pattern above are:
(A) May bago akong malaking kotse. (I have a new big car)
(B) May bagong kotse akong malaki. (literally: I have a new car that is big)
(C) May bagong malaking kotse ako. (I have a new big car)I just noticed after typing that it is more natural to place "new" before "big" imo

@DenC Thank you for the answer, teaching me the difference of nuance and which sound more natural.If I put "sana", can I say in this way?(A) May bago sana akong malaking kotse.
(B) May bagong kotse sana akong malaki.
(C) May bagong malaking kotse sana ako. Different from "mayroon", with "may", seems word order is not so fixed.

As "DenC" said, the first 3 sentences are correct. Sentences 4 and 5 are grammatically correct, but they don't sound natural at all.I also agree with "DenC" that we are most likely going to mention "bago" ahead of "malaki".I consider sentence A as more natural than B and C, but I would be more inclined to state it as "May bago akong kotseng malaki".

Thanks @Juantutri for the answer
> grammatically correct, but they don't sound natural
> "bago" ahead of "malaki"The sentences are gramatically correct wherever I put ako(personal pronoun), but it is more common to put ako in the 3rd in the sentence.
"May bago akong kotseng malaki".
And there are word order which sounds more natural like bago comes before malaki (if not, the sentence does not sounds natural).

@shin23 "Ako" does not have to be in the 3rd position. I could also have stated the sentence as "Ako ay may bagong kotseng malaki".I am not aware of any grammar rule about the proper ordering of adjectives. Placing "bago" ahead of "malaki" might just be the more common way we hear it. The arrangement of the adjectives could even be just a matter of personal choice.