welcome to the forum, David. what part of the country are you in ?
is this just an idea that you are toying with - or, are you actually considering
building this project ?
as an old box maker, I have used steel strapping from 1/2" up to 2".
and as we know, steel strapping lasts just about forever outside.
you would just have to fabricate an adjustable tensioning device for the ends.
you could probably google Steel Strap Turnbuckle or Steel Strap Tensioner.
(cheap HF straps can temporarily hold it all in place until the steel is applied).
for a novice/beginner woodworker, there is a learning curve to all power tools.
for an experienced carpenter/woodworker, I would suggest to purchase a used shaper
and two shaper heads for the interlocking staves. (then sell it after the project is done).
without a complete set of plans, that project could be fraught with frustrations
from the ground up.
Edit: to become familiar with the tools and techniques, you could start off with a
much smaller project such as a drum shell to develop some skills in that area.
building a small prototype could save you much aggravation (and money).