As Markharf and AnTyx already said, you can't do Azerbaijan after Armenia or vice versa.
Better to choose one.
Both countries have land border to Iran.
Getting Turkmenistan visa is headache. If you get Uzbek visa first you may have a chance. Just try. If you are lucky you can have it. Othervise can apply for a transit visa. 3 days will be enough to see and pass the most of the country.
Enjoy your ride...
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"where the traveller goes, nobody knows ! "
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