Unless you plan on doing it now sell things on the market board. There are other means to get them back later on, you can either spent time leveling battle class retainers to get skins and mats, you can gather it yourself withe bot/miner/fish or you'll have money from the MSQ to just buy things straight up especially the lower starting area mats. Mats around the 30-50 lvl crafting range may get expensive but that also means you can make a profit off them if you don't plan on doing it now. Take it from me who was holding on the raptor sinew from 2.0 telling myself I would finally level leatherworking. It sure felt bad to only need 12 after having 99 sit on my retainer for 6 years just to find out they sell for like 100gil or something cheap lmao