I would agree with the above.
Just one note, though. The word cliste is one I heard and used more commonly for 'intelligent' (clever), so you might consider this word also - since it is indeed shorter than 'éirimiúil'.

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Bí cinnte de go nglacfaidh triúr le gach aistriúchán a thabharfar.
Be sure to get three in agreement with a translation given.

Thank you all, that's 3 confirmations!

Earlier in the thread someone suggested this: Go raibh muinín agus grá agat (May you have confidence and love), I just want to use the word confident so can I just use muinín? I have also seen it as an adjective as:

muiníneach
dóchasach

Last question do I need the go before Hálainn?

OK...easy part first: Yes, you need the "go." Further (very important!) that "h" needs to be lowercase. If you want mixed case, it would be "Go hÁlainn." Basically, your choices are:

go hálainn
Go hálainn
Go hÁlainn
GO hÁLAINN

But you can't have "Go Hálainn."

"Muinín" is fine for "confidence" as a noun. "Muiníneach" means "confident" (an adjective). "Dóchasach" means "hopeful."

Redwolf

Oh okay. Thank you. Do I need "go" before confidence and confident? And in the interest of making it shorter can I use "grámhara" for loving as opposed to "love forever"?

You don't need the "go" before the others, and no..."grámhara" doesn't mean anything, as far as I know. There's is "grámhar," which means "loving/tender" (it's an adjective) but it doesn't convey the meaning you asked for.

Redwolf

Okay, I really want to convey the verb to love, but I know you or some of the other commentators said it would be wordy. Is there no way to convey in one to two words besides "love forever" which you suggested?

You could change go raibh "may you" to the more direct bíodh (3rd person imperative of bí) "be; let there be".

Agus can be shortened to is, or even ⁊ (not a seven but a "Tironian et").

In a way the nuance of muinín is slightly different from the modern English usage of "confidence", i.e., muinín means more like "trust" or "faith" and the nuance of "confident" comes idiomatically from placing asat féin "in/of/from yourself" with it.

Although misneach means "courage" in the dictionary, the Irish usage overlaps more with English "confidence" in some ways. The English word "courage" tends to be associated more with heroism but misneach is more everyday.

So, another way to say "Be confident and love" idiomatically would be:

Bíodh misneach is grá agat literally "Have courage and love"

or Bíodh misneach agat is tabhair grá "Have courage and give love"

or Misneach ⁊ Grá

Misneaċ ⁊ Grá

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Múinteoir Gaeilge - Irish Teacher
My "specialty" is Connemara Irish, particularly Cois Fhairrge dialect, but I can also speak Ulster and Munster Irish with native-level pronunciation.
Is fearr Gaeilge ḃriste ná Béarla cliste, cinnte, aċ i ḃfad níos fearr aríst í Gaeilge ḃinn ḃeo na nGaeltaċtaí.
Gaeilge Chonnacht (GC), go háraid Gaeilge Chois Fhairrge (GCF), Gaeilic Uladh (GU), Gaelainn na Mumhan (GM), agus Gaeilge an Chaighdeáin Oifigiúil (CO).

So what does Misneach Grá translate to?

"Courage Love"

What I gave above is Misneach ⁊ Grá, the equivalent of "Courage & Love".

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Múinteoir Gaeilge - Irish Teacher
My "specialty" is Connemara Irish, particularly Cois Fhairrge dialect, but I can also speak Ulster and Munster Irish with native-level pronunciation.
Is fearr Gaeilge ḃriste ná Béarla cliste, cinnte, aċ i ḃfad níos fearr aríst í Gaeilge ḃinn ḃeo na nGaeltaċtaí.
Gaeilge Chonnacht (GC), go háraid Gaeilge Chois Fhairrge (GCF), Gaeilic Uladh (GU), Gaelainn na Mumhan (GM), agus Gaeilge an Chaighdeáin Oifigiúil (CO).

Beandán, for some reason, the "and" sign isn't showing up (at least not from what I can see)...there's just a square there where there should be a symbol.

Birish, what he's trying to give you is the Irish written equivalent of "Misneach & Grá." Instead of using an ampersand, traditional Irish script uses a little symbol that looks a bit like a "7." For some reason, it doesn't seem to be showing up.

Redwolf