I'm getting the hang of the early recipes, but I have to say, it's a sorting nightmare if you want to automate anything. It's quite some time before filter inserters are available, and without them, belts become a mess of stone and ore. Crushed stone isn't smelted, but iron ore is. But when both are on the belt, that means you pretty much have to manually load your furnaces with ore until you get up to filter inserters. Unless I'm missing something?
Something else that's very weird is that the Bob's Gemstones ores are in the early extraction recipes. What's this about? You don't need gems at all in the early game in Bob's Mods.