If he's going to solo mine (would need a lot of miners for that to make sense), wouldn't he need to run a full node on his PC? Not that it would be of any problem - any remotely modern PC would run a full node no problem.
Yes if he was going to solo mine on his computer but that would be wasteful when he can solo mine on CK's pool for 1% of this winnings. This is a highly speculative venture though and I would not recommend purchasing and operating an S9 as a solo miner.