I'm in Canada, so the bulb he selected isn't readily available. Anyone found a good one with high CRI? Also, it's not clear to me how important the watts/lumen

I'm in Canada, so the bulb he selected isn't readily available. Anyone found a good one with high CRI? Also, it's not clear to me how important the watts/lumens are in a single bulb vs. multiple. If I can only find 100W/6000 lumen bulbs, are three of those the same as one higher wattage bulb with 18000 lumens?