August eh. Maybe the snow will be gone by then. This winter just keeps on giving. Stu can attest to that.
Your cruising plan is certainly doable, especially if you are using a 9kt boat speed to calculate your day. In general, you can expect variable winds from the NW and with that sea state will be less than 3-6 ft. If you are sailing, there will be lots of long tacks, when in the Strait of Georgia. Otherwise the area you are in will provide you and your crew with lots of aerobic exercise when sailing and no wheres near 9 kt SOG. Obviously, you have to take currents into account at all times and also base your arrival at the 2 sets of narrows that you will transit giving upwards of 10kts+. I have had some great sailing in Malaspina Strait. However, that leg (Pender Hbr to Herriot) is especially lengthy if you are fighting the current (2-3kts) in the Strait. On your return, if you are coming down Homfray Channel I am not aware of any place to park on E Redonda. You may want to check out Prideaux Haven, a large anchorage. Take your bathing suit because it is purportedly to be the warmest ocean water north of Mexico. “Bathtub warm”, they say. Also have a look at keeping the Copeland Islands to starboard once you take the left turn at Sarah Point.
Your into some of the most beautiful cruising grounds in the world. Two weeks will give you a taste of what is there and will likely motivate you to return in the future. Take good notes. I will say that in August and with the currency exchange, you can expect lots of Canadians staying home and lots of American visiting Desolation, so be prepared for some company. Oh and did I mention stern tie.
Have fun.