Thanks for the tips. As for photography, I'm certainly no pro, but I've had that bug for a long time. 35mm Minolta in the 80s, in the 90s it was a Canon 35, and starting in 2004 or 5, it was Canon's DSLRs that I got into. One of the lenses I have cost more than an H plus. I've only ever made pocket change at photography, even though I do have a good eye. I've always been afraid to market myself. That will be my biggest challenge. Since my wife and grandson are interested in this, I will be leaning on them to do some of that. My wife is now retired, so she has time, while I'll be keeping my full-time job. Grandson has just entered the workforce, still in high school, but has been taking video production classes for the past two years. They'll probably both also end up with a 107.The most difficult part is yet to come. In some areas more applicable to you, in others applicable to all.
Yours will focus on photography skills that require time and practice perfect. Obtain the model of your choice and practice, practice, practice. Like a plane, know the systems and performance inside and out, to the point you no longer need to contemplate an action before executing it. Know what to do when systems fail, as they always eventually do.
For all will be the upcoming changes we are facing from the regulatory sector. We won’t like them and work arounds will be challenging.
BTW, if it was me the choice would be the Plus. The Pro is past its prime.