Take the advice on the brew kettle! Get the biggest pot you can imagine needing or used commercial kegs (15.5 gallon) and convert them. Keep in mind that a 5 gallon pot isn’t big enough for a 5 gallon batch of all grain. A 10 gallon pot isn’t big enough for a 10 gallon batch. Get the spigot and thermometer!
At first, your going to just want to jump in and start making an all grain batch. Don’t! After a few batches, the excitement will wear off and you’ll start thinking about things you should have done differently.
Take your time getting equipment and keep making beer the way you are. What you want is an effecient system that saves time and makes brewing enjoyable. You’ll love the hobby for years, if you make it easy on yourself.
The chiller is a must. Do research on which one and buy it. Ice baths suck and take too long. Period. Not negotiable!
No one has mentioned water. This is the center of brewing. I fill 1 gallon jugs at a Culligan station and have to carry these things around. Don’t do what I do. Make or purchase a water filtration system.
As others have said, buy a keg system. Bottling sucks and is time consuming. It can take several hours to make priming solution, transfer beer to bucket, clean and sanitize bottles, fill bottles and cap. Kegging takes minutes, not hours.
The point I am trying to make is, even if you are not worried about time and effort now, you will be. Lifting heavy equipment for 6-8 hours is work. Don’t make this work! It’s a hobby and it’s supposed to be fun.
Water supply, big pot with ball valves, kegs, chiller and brewing structure.