After almost 4 days, i managed to mine 4 blocks. But due to relative slow internet connection, 2 of them become stale. Overall it's good experience and i got about ~0.05 tBTC, which probably will be used to try few different OPCODES on scripting or simply donate it to tBTC faucet.

On a side note, on 3rd day i tried to mine only with 1 thread CPU since the goal to mine block with difficulty 1. But when i shutdown my PC, i got this error message with >100K occurrence. Quick search on google shows it's due continuous CPU usage for long time, although i'm not 100% sure it's due to bfgminer.