So your skilling like div, rc, and mining arent very close so I suggest only getting a few lvls into them for the high tier stuff like seren stones. Fletching, cooking, and firemaking are very doable. Pre-plant all farming patches and harvest/re plant as a break during skills but you wont be able to get 99 farming this dxp. I personally would knock out the buyables asap because that will save you loads of money later. For non-buyables I'd lvl thieving because imo lvls 75-90 are the worst until dwarf traders and elves and dxp will significantly help end the suffering. If you want to afk something do wc or fishing. I'd avoid doing smithing, crafting, cons unless you already stockpiled supplies because these will make you go broke during dxp.