3 man boxing in WoW Classic suggestions

Hey all, this will be my first foray into multiboxing and wanted to gather some suggestions as to which three classes you think would make a good group to PVE quest with. I'll be rolling Alliance on a PVP server. Right now I'm looking into Keyclone or ISBoxer. I'm not sure which of the two are more user friendly, as again, I'm a complete novice. For starters I am going to just do 3 characters as I don't want to pay for 5 subscriptions if i turns out I am not as interested in multiboxing.

I've noticed a lot of 2 man suggestions and 5 to 40 but not so much in the way of 3.

If Alliance, try a paladin and 2 mages. Tanking, healing, the simplest dps rotation, hammer + 2 counterspells, eventually cleanse and decurse to cover all debuffs. Not to mention free water and food and portals. Buy "of the gorilla" and "of the owl" BoEs for low downtime.

Don't worry about user-friendly. Prepare for a bit of a learning curve. ISBoxer is more powerful and there are great tutorial videos made by Mirai. e.g. https://youtu.be/iqHaH4gbrmo

I'll 2nd the note about user-friendly. Multi-boxing takes a lot of figuring-it-out-by-doing type of learning. It's about like asking which make/model of car is easiest to take apart and put back together. VW's may be easier than BMW's, but they're both something that's going to take you a while to figure out.

I still like the simplicity of Keyclone, but I think I'm in the minority here.

I also like the hybrid tank/heal + 2 Mages suggestion. It's not so much that you need a tank, but having a healer is key for a lot of stuff. If you go Horde, any of the healer classes will work.

You won't see a lot of discussion about 2,3 or 4-boxing because there's not a lot that 2 or 3 accounts can do that a single account can't do. Your dps wil be double-triple, but your control will be 1/2 as good. That will probably let you farm some elite world mobs better than a solo player, but you won't be able to pull off the tricky solo-dungeon tricks. But with 3 accounts there's probably some dungeons you can "solo", so long as you don't mind clearing them a few levels behind where a 5-man team will.

let you inspired from this thread
https://www.dual-boxing.com/threads/57142-2-box-farming
there we discussed allready what jak3676 said, there is not enough value in dual/tripple boxing

[EDIT] small correction: with tripple boxing you can do DM East Jumpruns with tank, healer, dd and covering all 3 professions (herbalism, mining, enchanting)

if your main goal is only doing quests, also with lev60 then many compositions are viable.
2x mages for damage are the best and easiest(I dont recommend more then 1 melee or hunters as a starter)
3rd charakter should be a healer (paladin, druid have the possibility to tank, priest is strong if you want aoe grind with stamina buff and shield)

I suggest to start with 5 charakters.
isboxer and retail wow you can test for some days, and learn how to use the software
then I would try it for 1 month, if you dont like it you can switch to 3,2 or 1 account back.

as allready mentioned:
all software are easy to handle compared to the past
but it will take time to master it and you will learn it by doing
you dont need all functions from the start.