You aren't giving us much to go on. Without knowing what you're trying to build, it really leaves for a lot of speculation on our part.
Based on what little I can glean from your posts, here is what I can tell you.
-Hawaii is not an easy place to obtain financing (of any sort) simply due to its location, and unique issues (lava zones).
-For "most" types of construction, you are looking at 50-65% financing, and even that is hard to find in this market. So, the first question is do you have up to 50% of the funds you need to bring to closing?
-For a pure land loan, you are realistically looking at a LTV of 50%.
-Is all of the architectural and engineering work done or is this just dirt? Do you have the money to pay for all of those reports?
You could put the property under contract, but I wouldn't advice that without having a real good idea if you can obtain financing. There is a good chance you'd loose the deposit, and if the seller has another interested party, they could make the deposit substantial.
Again, without knowing what you are trying to do, it is hard to tell you with any detail if you actually have a viable deal.
As it stands, I think you should consider the real possibility of contributing 50% of the money needed to give this scenario any real hope.