Guidance appreciated on acers / Japanese maples

I have a spot in my garden (UK) where a deep space is available and it's not too exposed, so I think acers would do very well. I'd like to plant maybe three complementary acer trees, but am really overwhelmed by the sheer diversity of shapes, colours and sizes available. After several days of Google searches I'm hopeful someone with great knowledge of acers will be able to provide some quick pointers to help narrow my search.Generally I'm looking for:A mid to large sized standard tree with a wide canopy to create a dappled shade. Ideally not a tall canopy, something more focused on umbrella form.A tall, more narrow form tree to go behind that, in complementary / attractively contrasting colours. I've seen some which have elegantly cloud like side-branches, which I guess are the classically Japanese shape?A lower, shrub-like tree which is more about structure to sit in front of the other two, I'm drawn to the coral / red stemmed ones for this but the ones I've researched all seem to grow quite large. I'm thinking more twisting structure than the weeping ball form of 'crimson queen'. Paperbarks also look interesting, if they are small enough.In terms of colour I'd like as much seasonality as possible, ideally not all green in the summer, with a focus on red and yellow (possibly dark purple).Can anyone advise, or suggest useful resources, or share favourites for any of these specific roles? Thanks!