RTH arrived

My “Remembering Traditional Hanzi” by Heisig arrived today. It's faster than I expected and now there's a difficult decision. On one hand I'd like to start studying the RTH as soon as possible, but on the other hand I want to finish the sentences-project without too many distractions. At the moment I'm not sure I can handle the amount of studying required for sentences alone, leave alone the additional Hanzi cards.