To summerize:
Make everyone loyal. Really you might as well, it just lets you enjoy more content.
Remember the thing that you seem to have overlooked completely: Talk to all your crew members and get all the upgrades for the Normandy. I believe there are 3, Shields, Armor and Weapons. Not doing this will get someone killed.
Jack will fight with Miranda, and Tali with Leigon. This will happen the moment both fighting parties are loyal. Either choose the Renegade or Paragon opinion during their fight to keep both loyal, but it requires a close to maxed score. You can go back to the person who you gained and lost loyalty with when you gain enough Paragon/Renegade to win there loyalty again. You need to use an unlocked Paragon/renegade option on them. Remember, the crew select screen will tell you who is loyal, so if there's any question, just check.
For team leaders, pick either Miranda, Jacob, or Garrus. This is because these characters have leadership experience in military operations. Other characters are usually loaners, support specialists or similar, and therefore arn't good at commanding.
For opening the door, choose Tali or Leigon. They are tech experts, and technology is very prominent in there backstories. Ive heard that Kasumi works too. I'm almost positive that that is true.
For the biotic barrier against the bug things, choose Jack or Samara. Samara is an Asari biotics master, while Jack is an experimental human super-biotic. Everone else is only peripherally biotic at most.
Send someone with the crew for the crew to survive. The person you send needs to be loyal to survive. Don't think it matters who you send, but if theres any question, Moradin works.