1. & 2. No, once you die your soul travels to either heaven or hell, see Jesus' story of Lazarus and the rich man. You are fully conscious, though how this can be without a body is unknown. When the dead in Christ rise first, that means their souls are reunited with their physical bodies, which have put in in-corruption and immortality per 1 Cor. 15:52-54. The same thing will happen to unbelievers, at judgment day their bodies will be reunited with their souls, only for both to be cast into the lake of fire.

2. The Bible is silent on this issue, at least for unbelievers. Believers will have their physical bodies reassembled and made perfect. What happens to an unbeliever's body during/after judgment day is unknown; I guess we'll have to wait until we see it for ourselves.

3. Not sure what you mean by meeting God's criteria. The only criteria for salvation is accepting Jesus Christ as the Son of God and your Savior. You can't do good works to pay off your sin. Christ has already paid for your sins on your behalf, but just as you can accept or reject a gift that someone gives you, you can accept or reject Christ's payment for your sin, with the appropriate consequences for each choice.

Hope this helps. Read the Bible as much as you can: the more you read it, the better you can understand it.