90 4Runner timing belt replacement

I'm overdue for a timing belt change and will be doing it myself. I'm a shadetree mechanic type and have all the tools. The 1st timing belt was changed at 55K by the dealer and I changed to water pump, belts and the radiator hoses at the same time. It now has 130K and I want to do everything I need to do now to last the life of the truck. After doing some research I wonder if I should also replace the 2 belt tensioners, cam seals, and water pump. I will definately be doing the front crank seal since its leakng and the belts and hoses again. I'm leaning toward doing everything since asking the original parts to go 200K is alot. I don't really want to change stuff I don't have to though since these things aren't cheap. Any input/advise would be appreciated.

Dave T.