You can use kernel tuner to enable Sweep to Wake, that would eliminate the pressing of the power button. Other than that it doesn't get much easier.
Edit: I think the problem you may be running into is the "maximize widgets" setting;
go to System settings>lock screen> from there uncheck the "maximize widgets"
That way the lock ring will be centered, full size and all you'll have to do is slide it to unlock, instead of touching first, THEN sliding.