Good height stand, too. Any thoughts on this?
Not to beat about the bush, I would class that height of stand as totally PATHETIC. It would automatically preclude ever properly lighting a standing adult as you wouldn't be able to get the light much above average adult eye-level. Even at full extension (ie at it's most floppy), with the legs only partly spread as per illustration (smaller footprint = less stability but marginally greater height) you'd only get about 6 inches above eye-level so by the time you've moved the light even a small distance from the subject it's going to be full-on with no chance of shadowing to create shape in the face. Get a genuinely-decent height stand (I'd never consider anything under 10ft personally) with a good footprint (3ft is a nice starting point) and it won't need replacing for something better for quite a while - don't forget that although you'd have height and footprint stability, you don't always have to use it fully extended. Partly extended, either height or footprint, gives more stability against folks knocking it over or blowing over than a 'toy' stand like the one in your kit.
I HATE those plastic umbrella holders - there's a really good reason that the Manfrotto 026 is the Gold Standard and so much copied. Because it's the best compromise between cost and usability - the 026 alone costs more than the whole outfit you're looking at. But they last just about forever.
The umbrella, on the other hand, looks quite decent. Fibreglass ribs do allow a certain amount of light through so the "showing the bones" is less of a problem. However, the only time it's really noticeable is in eye catchlights anyway so at this stage I wouldn't be overly concerned.
From your gear list, you've obviously invested somewhat heavily in good shooting gear but I think that, appealing though the price of this lighting outfit may be, this would be a total waste of $30. The cost of 10 double espressos for a lighting outfit worth even unboxing? I don't think so, somehow!!