I know your last two Gyms in Black 2 ended with you losing something, but at least Clay didn't turn out as bad. Anyways, it'll be interesting to see what encounters you get on upcoming routes. I know Route 6 has Deerling and Foongus as options and you haven't used either yet, for Chargestone Cave I think you'll likely try for Klink, Ferroseed or even Nosepass (or Tynamo if you're lucky) given you used Galvantula in two playthroughs (both of which were Wedlockes). Route 7 has Cubchoo as an option given it's now winter in-game. Zangoose and Seviper are also there, but you never caught Cubchoo in any of your Unova challenges yet so it would be cool to see you get that. As for Celestial Tower, I presume you might repel through the earlier floors so that you have a better chance of getting Elgyem, given your previous challenges always had you getting Litwick there.