readability - Can you sacrifice grammar to keep instructions simple, specifically when using a(n)?

Because of the way the form is written, step-by-step in first person, it is necessary to put the a(n) to keep them grammatically correct for the Administrator case. However I feel like it makes the form look more confusing than necessary. Would it be a bad practice to remove the (n) and just have a case with incorrect grammar?

Example web form with radio buttons:

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Answer

The book On Writing Well (a great book,) suggests making things like these plural. In the book, he talks about how to avoid the gender problem when talking about men/women. (By calling them people.) For example, when talking about a specific user, instead of saying "when he clicks on the button..." you'd say "when they click on the button...", or the passive "when the button is clicked...".

Here's how this would work in your case:

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This will work even if you're only ever sending things to a single person. People don't tend find it strange, and it avoids your a(n) problem.

This technique makes the labels a little shorter and keeps them easy to scan. In certain contexts, @matt's answer would also work. It depends on what you're going for.