Everything will be available after Kickstarter. We don't want to alienate anyone just because they may want to wait. However, the prices on Kickstarter will be lower than after. So if you are looking to get a dice box and tray at a good price (especially the inlay versions) pledging on Kickstarter is the best time.
No you don't. You can order a Walnut Nomad's Tray, with a Padauk Nomad's Lid, with a Mahogany Dice box and a Gabon Ebony Pencil, if you want to. Just remember that you don't select your wood type until the survey after the campaign. Now you simply just pledge for the amount needed for each item in it's wood type/variety.
Don't see the answer to your question? Ask the project creator directly.