I haven't found any rocky bees yet, but since I fired up my lava centrifuging, I don't think I'll need them. It gives access to most metals although some need a lot of refining (e.g. Electrum -> Gold/Silver; Silver -> Lead) So far I have made Iron, Steel, Tungsten, Copper, Tin, Nickel, Bronze, Silver, Gold and Lead renewable. I also got a tiny pile of platinum dust from a scrap box, so even Iridium isn't out of reach, although it will take a huge amount of time to get even a single piece of iridium. Advanced Circuits are a bit tedious since you need Lazurite Dust for them (no way to get Lapis). Currently, I'm working on compact and fast Scrap-producers to bump up the production of stuff that can't be manufactured directly. Looks like 5 Igneous Extruders making cobble which are turned into halfslabs can keep a fully upgraded recycler busy. This setup would produce about 2.8 scrap boxes per minute. The recycler takes 109 EU/t though, so I'll have to increase my powerproduction quite a bit. The blaze spawner can supposedly fuel 2 36HP and 1 36LP boiler, which would net a total of 360 MJ/t or up to 540 EU/t via GT Geothermal Generators.
fun fact: tiny pile of platinum dust seems to have a 0.09% chance to drop from a scrapbox, leading to about one iridium per 35555 scrapboxes. If I'm not wrong, the Matterfabricater needs 8 Iridium, which would take a measly 70.5 real life days with one full speed recycler
There's two things atm, that I can't find a way to make: Nikkolite and green dye. Nikkolite would obviously be necessary to get into higher tier RP2 machinery and green dye seems to be the only way to get cyan dye to make an omniwrench. Both aren't necessary, but would be very convenient
current machine setup: