I was speaking to my immigration lawyer... and they said as long you have a lot of proof of on going relationship, plus nikah and pictures with you guys together. then they will not have a problem.
They only tell you to go back for a rukhsuti and send you for an interview if you don't have enough proof. such as pictures, on going relationship proof. such as phones bills, money transfers, emails, text messages, wedding invitations... By the sounds of it, you should be good! Just do inform them that you PLAN on doing this afterwards and in shaa Allah they won't have any problems.
My immigration lawyer gave me an example of a few cases that have gone through perfectly fine....
What i attached with mine was
- 5 years worth of phone bills, text messages, emails and skype conversations
- Pictures of my Nikah and Nikah Reception, Invitation, Receipt of the hall and how many people attended. Receipt of the rings and presents given. Gift invoices... plus wrote a detailed letter on why rukhsuti wasn't done and when we plan to get that done!
I am also a Nikah only case, and let me tell you i was freakkkeddd out.... until i sat down with my lawyer last week and she explained it very well to me, that it shouldn't be a problem. If you happen to have the rukhsuti before they even ask, send them the proof! No harm in that! Most of all just continue doing dua...bcuz there is nothing more powerful then that! Hope everything goes well for you both! In shaa Allah!