its 10mm longer than your old bike, and youre running a tiller of a stem 🙂 . So yes, going to a shorter stem would make it feel the same length as your old bike, but not steer excessively differently (I ride 90mm which is long by modern fashion standards so your’e not going down to some twitchy stubby length). Fitting a 90mm would seem a sound idea if you think your current one isa bit too long; 10mm to take account of the longer TT, 10mm to make it fit better than the old bike.
The design of the frame means there’s loads of stand over height so that was never going to be an issue, so I would say if you are happy with your current bike’s size it will fit you. It’d be too long for me but that’s down to personal preferences.