I personally think it's fine to text a bit (not to much! and not necessarily daily). My feeling is that it can keep the buying temperature up on a girl you haven't solidly hooked yet, and might reduce flaking.
If she does get back to you I wouldn't go ahead with your planned text, as it would be in congruent with the spirit of you first text (spontaneous). I'm not sure that it is really all that great to begin with. If she isn't getting back to you, it may mean she changed her mind about getting together.
In some ways I think you answered your own question. Where you want to get to is here
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have solid game with her before so it doesn’t matter.