Cead = one hundred + pronounced "kayed" (as in Played) Mile = one thousand + prounced "meala"(meal + Ah) Failte is welcome and pronounced "fallcha" (Fall + ch + ah)
As for how to put the accent above the letter e I don't know - (computers ! ) but its called in Irish a "Fada" which means Long and draws out the length of the vowel sound.
I've failed every irish exam in school - and there are loads on the mudcat who are fluent and can help better.
As for the scottish Pronunciation - near enough the same - but that's a guess as I can sometimes barely understand their english
Anyway enjoy - hope you learn more