Sweetie, it's a hard row to hoe.
At present you have time, and a new person in your life, one that you'd like to be there for the long haul. To achieve that alone, you're going to have to get great at communicating, your partner is going to have to get to grips with validating, and most importantly, you will need to talk your partner through your dysphoria.
You're also going to need to Distract, Deny and whatever else gets you through the day, but beware, you'll not know when that great ache will come to visit, all you will know is one minute you're ok, the next you're drowning. Throw in the risk of substance abuse, and anger issues from pain frustration and hurt, it's obvious that it's difficult.
I've chosen not to transition, because I have my partner for life, and I have children, and a miriad of other reasons (excuses), and rest assured every time I'm pushed under the ice by my dysphoria, it's harder to crawl back out than the previous time I have to be gentle with myself, remember that self harm isn't good, and mindfully ground myself in the moment.
Amanda is right, it is a life sentence, the challenge being to not let it get on top, to not let it devour the pleasure and not let it strip the joy from simple everyday moments.
(Hugs)
Rowan