A bidet is the best to keep the area clean, and pat dry. I used a portable squeeze bottle with special nozzle (Amazon) for a few weeks after takedown, and it worked so well I invested $100 on an attachment bidet for the toilet that hooks up to my bathroom water pipes. Plus $40 for a handyman to install it because I don't know plumbing, but I think there are YouTube lessons. It's the best small investment I've ever made. When I'm away from home I miss it! I carry moistened paper towels in my bag away from home. Whatever baby wipes you use, never flush wipes down any toilet -- even if it says flushable -- the wipes are never flushable because they do not dissolve like toilet paper is designed to do. You will end up with a blocked toilet and raw sewage backing up just when you need the toilet.
I would not recommend adding Epsom salts in your sitz basin. The sitz bath is meant to soothe the inflammation, bring blood to the area to help heal from the inside, and any additive might cause stinging or burning. Try plain water, as warm (or as hot) as you can tolerate. The hot water will bring a rush of blood circulation and will help heal fissures, sores, etc. I used mine (from Amazon, or health specialty store) only a few times and it work so quickly I didn't need it again.
Be prepared that after takedown, when your intestines start to wake up, it will hurt. I'm not trying to scare you, but this is a fact and if you are prepared and expect it, it might be easier. I didn't expect it, didn't know what was happening and I suffered. My gas pain lasted 15 hours straight and the nurses could only give me hot black tea but no medication is available that eases the gas pain. Just know that it will pass, as soon as you can pass gas. I hope it goes easily for you.