I'll try to answer your specific questions when I've some more time, but meanwhile have a look at my blog post on suggested starting materials for my recommendations on where to start. I think you are missing one or two essentials (Exaltolide for example) and I wouldn't buy so much coumarin, given the IFRA restrictions on its use and how little of most things you are buying. Also you don't have enough aroma-chemicals in your list to replace jasmine absolute.
You might also skip some of the aldehydes and reserve those for a later order as they are very difficult to use when you are starting out.
Hope that helps.