Not to worry!
I just went through the same thing last month.....starting after 5 years as hanger queens.
They all started fine with a little prime. Needles were quite close to what they were 5 years ago.
The JETT engine was a little hard to turn over (takes a prop-pitch rotor!), but it finally started and one of the Enyas threw a prop because I over-primed.
One of the other Enyas had metal oxidation issues in the carb throttle body, but some 0000 steel wool took care of that.
I understand exactly how you feel, but I'll bet you will be pleasantly surprised!
And they all started!