well, at least a new guy asked for info BEFORE he built / bought, for a change.
Find some pole builders, they should be better and faster at it. But try and look at their prior work / referrals if you can.
But know there are several methods / techniques and lot of disagreement and wildly ranging costs for whether or not wood goes in the ground. Get familiar with what is available and how it is usually done in your area. You don't say in your profile, but 'frost heave' can be real trouble. And what codes - IF ANY - you might be subject to also plays a huge role in costing.
And maybe go watch some vids from the builders posting their work on youtube, get a feel for what a proper build should be / look like.
RR Buildings is 'moving up in the world' and builds palaces now, but their early works really do a good job of showing the basics and for a then three-man crew they worked wonders.