I am sorry to say this, but this cannot be done online. For a collection such as this, worth this much money will have to be appraised in person. The appraiser will have to give you a written report for tax purposes. This is the IRS Rules.
You say there are no experts in Honolulu. Have you tried Art Historian Appraisers, or Fine Art Appraisers? There are appraisers who can value this for you. I have a list of a few appraisers, that I have recommended in the past. Also a list of places you might contact to find someone. If you like I can supply with this list?