You might be out of luck there. Lets say by chance we get the interview LETTER next week (I am 29th DM on ECAS). Our interview still won't be until mid- late April (I expect 20th April+). Which means that you may not receive your PR card until June 20th (this part is virtually random how quick you get it). And that is assuming you don't get the PR card rejected with photos, which can and does happen.I’m March 29 2018 applicant, got DM email on 30th January (Wednesday)
Today is exactly 7 weeks waiting for me, hoping my interview comes soon as my partner is going away for 5 weeks for work at the beginning of May and won’t be able to return if interview date is scheduled after that!
Such a loooong wait
I would move your trip to July if you can, if I were you.