Wait, something that Kurt said at the beginning that is wrong. If you double the play in speed to your DAW, and then slow it down with the DAW, you will not have a HF loss. It will be just the opposite. You will have a HF boost. Increasing IPS always boost top end, and casues the low end to drop off. Decreasing IPS increases low-end and causes the highs to drop off.
Another thing. If you double time it going in, you will add a mechanical noise, and it will be very noticable. You can't just pitch shift, as that will not compensate for the speed, so you will have to time expand as well.
When you time expand in your DAW. Your recording will not have the detail that it would have had in real time, as it is play in double time. Remember that the computer is recording most HF material at this point.