It should be "go maith" and "ar maidin inniu".
"An bhfuil tú go maith ar maidin inniu?" means "Are you well this morning?"
Oíche mhaith agat (to one person) Oíche mhaith agaibh (to more than one) To one retiring: Slán codlata agat (agaibh).
go mhaith
"Ba mhaith liom grá a bheith do Valentine go deo" means "I'd like love to be your Valentine forever"
"Tá sé sin go han-mhaith" means "That's very good"
In Irish it's "Chreidfinn go maith go bhfuil tú"
An bhfuil tú ar meisce go fóill?
"An bhfuil cead agam dul amach?
Irish: Tá tú go han-mhaith. Scottish: ?
"Tá tú go hiontach" means "You're wonderful" "An bhfuil tú damhsa liom?" means "Are you dancing with me?"
An bhfuil cead agam dul ar an ríomhaire?
'Níl aon fhios agam go bhfuil a lán Gaeilge agat' would translate as 'I don't know that you have a lot of Irish'.
In Irish it's "ba mhaith leat siúl amach liom?"