Timing belt change and what to get.

[benebob]

I'm tired of procrastinating about my T-belt and am planning to order the necessary parts from Liberty by May (that means I'll have it in by the end of June). I'm gonna do everything down there while I'm at it I guess so that means I'm gonna need what?
1. T- belt
2. Water pump, seal and assorted hoses in there.
3. Front Main seal.
4. Camshaft seals? (are these necessary? I've never heard of one leaking)
5. Oil Pump.
6. T- belt cover seal
7. Stopper thing to hold the flywheel in place

I have 140k on the car and have been told that the tensioners should be replaced at the second t-belt change. Is that necessary as they are kinda pricey. If I need new one's I'll know when looking at 'em right?

Suggested gasket sealer for the seals and pumps?

Also think I should replace the valve covers when I do the belt?

Thanks for everyone's input.