Welcome to the fold Andy. I am not sure how much grease it might take to convert vintage suspension technology to feel in any way close to a cheap and cheerful modern day car, let alone match the standard of JAG or BM saloon..!!
Perhaps a bit like you I had owned numerous sports cars and my first Morgan journey was on the motorway system in the rain, though I suspect mine was of slightly longer duration and perhaps a tad colder as it was Winter and without the "benefit" of a hood, from Shropshire to Central Scotland, with the spray from many an HGV to keep me refreshed... (-: Perhaps not the ideal first journey to undertake, but then I had bought into the idea of driving a vintage car as the primary reason to buy a Morgan, all be it with modern mechanicals...
Just wait till that first dry day, hood off, driving on your favourite road in the sun, looking at the long bonnet stretching out in front, listening to the engine purr spreading smiles within the general populace as you go, and of course your own smile will grow and grow..(-:
Like many before you, it is possible to spend a great deal of time effort and money to try to replicate modern-day expectations of comfort in your Morgan, or just accept a Morgan for that which it is... Whichever direction you choose I hope you will very much enjoy the process of discovery..
