I don't think you can record from the move camera onto the PS3, but you could always just
plug it into your computer, as it's a very good webcam for it's price.
Getting your Cross down to 10 seconds should be a very achievable goal, spend some time planning out your cross (even if it's just 3 of the pieces), and dont worry about how long you spend thinking about it. if you can get the move count down to even 10/12 turns (optimal is usually 8 or less) then you'll need little more than 1 turn per second to get a faster time on it. F2L is where you'll save the most time, but it's also the hardest to get used to, but give it time and you'll get better at recognising the cases and remembering nice ways of solving them. Good luck.