I had an orchi in December 2024 before my vaginoplasty 6 months later. If you get a good surgeon or go with the same surgeon for orchi as well as vaginoplasty and they say they can do the orchi and then the vaginoplasty later, it shouldn't be a problem.
The problem arises if you get the orchi from a surgeon that isn't trying to preserve the scrotum as a graft for later and the scarring ruins it for vaginoplasty, in which case a graft will have to come from elsewhere on your body (not ideal), or you would have to use a different method like peritoneal pull-through.
Either way, see a doctor and figure out what your options are. It's possible the tumor is benign and this panic is misplaced, or it's cancer and you need to have it taken out ASAP and you get an orchi sans gate-keeping sooner than expected (which is still a win).
Either way, it's a good idea to see a doctor and be practical about next steps - your health matters, and you have to work with the reality you've got.
Just remember transition is a long term process, you have to be patient with HRT and to get surgeries - some people are on waiting lists for over a decade to finally get the surgery, so temper your expectations and prepare yourself mentally however you can. Maybe find a trans-affirming therapist or someone who understands this.
Also, my DMs are open (and you can chat me up on Matrix if you would like) in case you need someone to talk to. Good luck ๐ซ