TBH I think in this day and age it doesnt matter; my kid have names spelt exactly how they sound (although unusual in origin) and I STILL have to spell, respell and repeat it 20x to new people! So I figure atleast with an unusually spelled name, esp if its gaelic which means its actually spelt "normally", you expect to have to spell or prn it a million times.

I think a pp suggestion of using Hiro for a girl is good too!

I reckon whatever you pick will be fabulous though