Well...?
Aodh is pronounced like the capital "A" or the "ay" in say/day/May etc.
Ross is a family name, but name of dh's brother so not a goer for first name as we avoid that kind of name sharing here.
If Aodh decides he hates it and has had enough of having to spell it say, his name is easily anglicised to Hugh at any point, or Ross will be an alternative. Though friends of mine here with Irish names seem to feel pretty positive even with having to explain origin/spelling etc, I know some people really don't like that aspect, but it is fairly pronounceable anyway.. so...
Interested in reactions. Know that Irish names in particular seem to stir up a bit of bunfighting on MN so waiting with bated breath for the views of the MN jury.... 