'from what I read Caoimhe has a few different 'standard' pronunciations, so have to expect sometimes your child called whichever one isn't your preferred way to say it. I suppose the advantage of something phonetic in English is that you have a better chance of getting exact pronunciation you want.'
There are two pronunciations, Keeva and Queeva. They are both standard. Keeva is west and NW Irish and Queeva is SW and southern Irish.
'Sorry but proper Irish pronunciation for Caoimhe is Queeva, not Keeva.'
Not so.
I have a completely phonetic English surname, common in one particular region of England and well known in the US because a famous actor also bears the surname. You would not believe the non-phonetic variations I hear, from the comical to the unbelievable, from people whose first language is English. So I disagree that your chance of getting the pronunciation you want goes up the more phonetic your spelling is.
I have an Irish name that gets mispronounced - once. Nearly everyone who hears it gets it right the second time. I secretly judge people who don't.
It gets misspelled; doesn't bother me. What does bother me is the misspelling and mispronunciation of the Anglo names of my DCs, because they were chosen in preference to Irish names just to avoid the various awful and life-limiting problems 
so many have warned about on this thread.
One of the DCs has a name that has been in the top ten for at least a decade, and one has a simple four letter name, often categorised as a classic. They have maybe a 50/50 chance of seeing their names spelled right. Two of the DCs have Es in their names that are mispronounced and misspelled as an A, causing a significant mispronunciation and misspelling. In one case an extra syllable is added thanks to the A. The only one whose name everyone gets right uses a nickname three letters long but a combination of two letters (along the lines of Bob). Everyone gets it right except her gym teacher for the last six years, that is.