The thing is, it really doesn't matter all that much what your experience has been or your current machine is. The issue of human ergonomics w/r to road cycling has been under development for ~130 years using billions of test subjects. It's been pretty well studied. That said, there is also the issue of human conditioning for road cycling. It's like the fairy tale giant's bed: if their feet hang over, cut them off, if they're too short, stretch them. IOW if your current conditioning, flexibility, and reflexes don't match optimal road cycling ergonomic requirements, you don't modify the bicycle, you modify yourself. That way, after a few months of cycling you find that you have attained cycling nirvana, a perfect body on a perfect machine. Just like a new pair of skis, a proper bike teaches you to ride. You can't teach the bike.
So what you do is to go to the Competitive Cyclist fit calculator:
https://www.competitivecyclist.com/S...ulatorBike.jsp
and have someone help you take your dimensions. The calculator will give you 3 choices for the type of fit you want. You can run the three suggested fit styles and look at their differences.