Idris-M is giftable as it is exactly 1000$ melt value, but its price is around 4-5k$ on grey market currently.
Idris-P is not giftable without RSI concierge support (though I have never heard of such trade), because melt price superior to 1k$.
To my knowledge there is no CCU to any of the Idris (the Idris K kit is not a CCU but a combat upgrade to owners of Idris-P and M).
Add-on pack or game packages including the Idris would also fall in the category of being over 1k$ so not giftable without RSI support.
Your best bet is to buy an account with a M or P. I recall Captain Harlock was selling such account in 2020 and made at least 2 posts about it, I think the account might still be for sale you should check :
selling my high admiral account = idris p with after market upgrade + lti Orion cheap my loss your gain pst for more info
testsquadron.com
BUT account sale is highly risky and not allowed by the TOS. You should use the service of middleman like with Star Hangar and notarized sale of account.
edit : or wait for next IAE and get yourself an Idris P !