That splay is what makes those pinky keys actually usable for me. It helped a lot to print the layout to see test for comfort

Swapping out the pump should be relatively straightforward. One thing you might consider when buying a new pump is getting the brass version (Ulka EX5) that many have said reduces noise. There’s also a higher wattage version (52W instead of 41W) of the same pump that has higher water debit and can give you more flexibility which is the one I got for my machine (Ulka EAX5)