It really is a lot easier. You have a bike that you can measure. The stand over of the old bike will give you a starting point based on the size of Raleigh.

You also know the handlebar height and reach that doesn’t seem to work for you. Since you’ve had the bike a long time, you probably have a good idea where you would might want the bars to make things more comfortable.

You might also want to think if you really want a drop bar bike or a flat bar bike. Only you know if a faster more aero riding position is want you want going forward.

John