Also, have you considered getting a mouse with a couple extra buttons on the side? If you bind those extra buttons to hotbar slots that are out of reach, say the 7+ section, then you can use those skills quickly as well, with the added benefit of it not hindering your movement at all since it doesn't use the same hand (if you need to move ASAP to dodge something you can still activate those skills with your other hand, without having to let go of your WASD section).