Okay I'm not trying to judge but I never get when people say "female personna" or "male personna", like alter-egos? Because I am just me and all my life people have told me I am different and, ugh, "too sensitive" and basically I was treated differently than an heteronormative guy would be and got different expectations placed on me. When people here say "female personna", do you mean you have another "personna" that is totally guy-acting and masculine which is the one you show to the external world? Because honestly, though I'm young and stupid, so feel free to just ignore this, I could see your transition becoming much harder if you have always presented as heteronormative guy. It's the different for the trans girl presented as queer boy for most of her life before transitioning because people could see her femininity and she would be othered, anyway. So transition can be life-saving for transgirls who pass and were feminine males before, as she has more opportunities as a woman than she ever did as man.
Second, does your wife know about your feelings? Have you discussed them at all, layed them onto the table? If you decide to transition and just outright tell her when there never was a warning, no signs, nothing, she could feel completely betrayed, leading to divorce. So I suggest you discuss your feelings with your wife before you take decision. Kids are great and much more flexible but marriages often come to an end. You have to consider what's more important and balance it all out. If you decide to transition, you may not have the best results as you're 43 but a lot can still be done. HOWEVER, you may lose your family. Especially if they never had a clue at all and this comes out of the blue. Could you deal with not passing? Losing your job?
sorry for the questions and sorry if it's harsh, I'm really just trying to help