..but right now F2Pool would be an option.
Please don't. Every coin that gets on FUpool becomes unminable due to the diff going through the roof. It's a sure way of centralising your network. HUC had the same problem, then they got off FUpool & miners came back & price has gone up ever since. SYS has the same problem, unminable due to FUpool pushing the diff into the stratosphere so price has stagnated even though the devs are doing some great work.
True that, another option would be Suprnova, Litecoin & Viacoin merge mining.
However prohashing is pro Bitcoin Unlimited, won't signal Segwit and maybe never will because they don't know how to implement in on their pool.
If you are mining on a non-Segwit pool, you are actively voting against Segwit.