even at 1 block a week average he could go several months without a block easily. so don't be financially responsible

start small and join a pool, grow with experience - that is a much better way for a small miner. if you start investing 200k with no knowledge of details you will get burned.
I wonder what the best yield would be, if you mine that 1 block alone, compared to 1 or 2 blocks with a pool being shared with loads of other
people. Yes, you might be more lucky with the combined pool and you will have a steady income, but your yield might be lower? I have always
just mined in a pool, because I thought it would mean that you would get a steady income from that.
