If you are interesting in mining then I would suggest picking up a couple of GPUs and following a tutorial on putting together your own rig, a quick google of the GPUs model should tell you what sort of performance you can expect for mining. You could always start with some used hardware and see how you get along, we have quite an active group of ETC miners on our telegram chat so feel free to drop by if you run into any roadblocks!
About CLO, sure on paper it looks great to accumulate before the cold staking in November, but I would recommend not throwing all your eggs in the same basket. If they fail to deliver on this update for example then CLO suddenly does not look so great. I hope it turns out all fine but I have some concerns because a big part of their project is around providing security audits… and as of yet I believe they have not done any.
Still you can always start mining Ethereum Classic