The text of both of the feats is clear about giving you a focus pool with 1 point in it. However, the call-out box on page 302 of the core rules (“Focus Points From Multiple Sources”) tells us that if you gain multiple focus pools, then you add their points together:
If you have multiple abilities that give you a focus pool, each one adds 1 Focus Point to your pool.
In your example, if you took both Ki Strike and Ki Rush you would have a focus pool of 2 points.
Be aware that no matter how you do it, the maximum size of a focus pool is 3 points.