Ace,
Not yet being an owner of a Hawk but looking forward to what will be needed to carry on adventures, weight and distribution of weight is of more concern to me than volume or storage space.
Admittedly my '05 Tundra contributes to my concerns over total weight but carrying a spare on the roof will not just make raising and lowering the top tough but it will move the CG up and affect handling to some degree. I am mulling over such weighty items as a receiver Warn winch for use at front or rear and at least 5 gallons of fuel. I see all the rear mounted tires/storage boxes and again wonder about load distribution.
When I get our Hawk I will weight each tire/axle and the total to think out where and if I can add substantial weight beyond the minimum gear to "get home". My plans are to avoid pavement and seek out off-road so of necessity it ups the ante.
Hope your trip was a good one!
Phil