If you buy a good gasket, you really shouldn't need any RTV at all.
When I did mine three weeks ago, I used the Permatex gasket sealer, only to hold the gasket in place until I got the pan mated to the engine. Then tightened it down and all was good.
The gasket I used was the rubber type with what appeared to be some type of stiffeners built into the long sides of the gasket to keep it straight.
2000 TJ Sahara
4.0, 5 Speed, D30, D44 w/Detroit Truetrac, 4.56 gears
Rancho Lift, Body Lift, Motor Mount Lift, SYE & 33" tires