That IS a perfect plan. My first backpacking trips were with a tube tent ( they now cost about $8--back then they cost $2) and we did pretty much what you are planning.

You might check out a local community college, as they often have programs like this...or at least a faculty member who is interested in these activities. That would be a good connection to make.
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Check our our website: http://www.backpackthesierra.com/

Or just read a good mystery novel set in the Sierra; https://www.amazon.com/Danger-Falling-Rocks-Paul-Wagner/dp/0984884963