To use the virgin land for what? You need to clarify whether for agricultural purpose (and which type of farming - fishing, cropping etc) or perhaps, for building projects of whatever sort. Answers to that would guide whether you need an agric expert, a geologist, a marine professional etc to compliment your efforts in the study. Also, are you interested in both factors and professional expertise required?
Please check the quality of the land, and is it prone to flooding and erosion. If so, based on your planned usage, you will need to determine how much of investment will be required to make it ready for what you want to use it for. Use 50 year or 100 year return flood data for this.
Once that is done, develop the cost benefit for the activity that you want to undertake. Accordingly you can take a decision. If the investment is huge, you need to also check if the property and activity can be insured, and then factor-in the insurance costs as well.
Analysts must often face the question of 'how to analyze virgin land' without any particular end-use in mind - as in "I have land, what should I do with it?" The question essentially revolves around what real estate appraisers might term a "Highest and Best Use" study. HBU studies focus on what feasible land use generates the highest net present value --- many would modify that by adding societal concerns and limitations beyond the economic return to the land owner.
The results of such an analysis ought to point you towards a limited set of feasible potential land uses which could be analyzed using traditional analysis (what is the most profitable land use that is physically and economically possible given local social and other legal constraints).