It's kind of difficult to answer the OP's questions without the bare-bones of personal history, such as age and history WRT cycling/weightlifting experience or are you a recovering couch potato?
And also goals. My personal goal is to live without assistance as many older folks need...I'm pushing 60 and I don't want to end up like so many older folks I've observed. However, maybe the OP is looking to participate in a race or just kick ass in group rides.
Fill in the gaps if you wish...
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