You don't need anything more than an 8000 lb winch. However, faster line speed is a nice thing to have, it can save your winch cable and is safer. In many winching situations you still have to drive, trying to get some traction as you're winching. There is a tendancy for many to overdrive their winch, meaning that they power ahead when they get some traction and get slack in the cable, then they slip again tightening the cable, and this can happen a number of times during a winch pull. When the cable goes slack you get loose wraps of cable on the drum, then when it tightens up again those loose wraps get pinched and it puts a kink in the cable. Now those kinks are a weak spot where the cable can potentially break under load on a future pull, possibly hurting someone. So, the faster line speed helps to not get kinks in the cable.
Once you're using the winch, don't try to show your friends you can still go, just stay patiently on the winch until your clear and save your cable. If you have kinks in your cable, be responsible and get a new cable.
The new comp winches are a lousy choice for recreational wheeling, not enough cable, and if you have to carry a cable extension why not just carry the extra line on the winch drum where it's much easier to use.