Recruiting: there is a subreddit specifically for finding people to play rust with. I personally would only properly ally with two types of people. #1 - Experienced players with a lot of hours. Or #2 - Someone who is very good at pvp.
Housing: Depends on how you want to play, There’s 3 main play styles for clans in rust, it’s either one ridiculously big hard to raid base for the whole clan. One main base for the clan and a few support bases/towers. Or lastly seperate bases for all clan members usually very close to one another or all inside a compound. Your choice.
Gearing: The best possible gear set in rust is - Pants, Hoodie, Facemask, Chest Plate, RoadSign Kilt and either gloves or boots, gloves are probably a better choice for pvp as your hands are more likely to be hit then your feet.
Management: Not exactly sure what you mean, but probably just one leader, a few officers (second in charge) and just leave every one else equal depending on how many members you have.
Who to trust: It’s rust, trust no one, always suspect they’re going to backstab you. At first anyway.
Weaponry: Bolt action is by far the best weapon in the game, it’s cheap, accurate, has good range, and can be lethal if you’re a good enough shot with it. Custom SMG is probably the best gun for short range, it’s very accurate and has an extremely fast rate of fire. Semi auto rifle isn’t the best, but being extremely cheap makes it quite a good gun. Pump shotgun is great for short range, but I’d much rather a Custom SMG. Don’t bother with the AK unless you have a ridiculous amount of high quality, the high cost plus it’s disgusting recoil just make it a terrible gun unless you’re very skilled with it.
Roles: Leaders, Gatherers, and Builders.
Raiding: Rather then raiding massive bases that require a lot of explosives, you’re probably better off using the explosives to raid a few medium sized bases instead. Most clans go for the massive bases, and half the time you won’t get half as much Sulfur back as you put into it.
Counter raiding: Not exactly sure what you mean. Also in my 1700 hours I’ve never actually been involved in a counter raid, so I can’t provide any info on that at all.
This might not have even helped you at all, but I was bored so I thought I’d have a crack at helping you.
Feel free to add me on steam if you want to ask more questions, I like to think I have a lot of experience and know a lot about the game.