That looks great! Love how the colors are fading into each other.
TAAT toe up is my favorite method for socks! I noticed you have two separate balls - how do you normally split them? Do you ever run out of one before the other? I have an irrational fear of cutting the ball to the wrong size and not knowing what to do after.
Looks gorgeous! You got this! Knitting sleeves TAAT in magic loop is my preferred method for sweaters. It might take a bit, but you'll end up with perfect length sleeves and when you're done, you can wear it immediately!