Question about SSD and caching

So I never worried about this before hand coming from slc and mlc nand as their life spans usually are estimated at 8 years or so. But what I usually do is upgrade an ssd every year or few times a years, just getting a good sale and all. My first being and OCZ, second Corsair, third Intel, fourth OCZ, sixth PNY, seventh Mushkin (Toshiba), and my seventh and most final being Sasmung. I got it not a month ago and have been trying to sell it ever since. It is tlc instead of the traditional mlc and slc. Anyways with tlc at 1000 write cycles, mlc being closer to 5000 and slc 10000m I figured I might start worrying about caching of programs and all to utilize the full length of its possible life.

It being a 500gb Samsung 840 EVO

I have already written close to 80gb on it in total writes and I have allocated less than 30gb in total. So taking into account the initial install of windows 8.1 and its updates + third party program installs this amount seems reasonable. Plus I had a fart moment where I kept changing a specific setting around a number of times.

I am wondering if and how I can avoid caching to my ssd or redirecting it to my primary file hdd (which as is is used for virtual memory instead of my ssd) for chrome caching?

Also how can I redirect Runescape's cache?

Do I really need to worry about this interms of caching and lowering the lifespan of the ssd? I would prefer to keep this ssd in good health for 4 years atleast for this single os install. I dont plan on switching it out for another one as it is 500gb and I should use for than half that in total for space. My only issue is the concern over the very limited number of write cycles tlc offers.

On the side of chrome this is what I have thought as an option. Using incognito (which might not cache/store cookies) and using that period which might be better for ssds ingeneral. As in no writing from what I can imagine of any kind. No webpages stored in history, nothing cached, passwords arent saved etc.

A 500 GB drive has a ton of cells to work with, so you won't have to do anything for any practical reason. Apart from the cells ability to handle a lot more writes than their rated minimum, the drive also has a small area of cells in SLC configuration that will catch most regular operation writes as they come in. Install Samsung's Magician software and turn on the Rapid mode, for it to use some spare RAM as an additional read&write cache. 

I go the full 9 yards when it comes to SSD optimization. From putting my System's environmental Varibles (under system, advanced settings) in another drive, disabling hiberation/sleep to using symbolic links.

 

Here's a guide: http://blog.danieljost.com/symbolic-links-save-space-ssd/

 

Sure I'll upgrade my SSD before I let it's preformance fall to 1/2 of what it is when it first started with but yea I write anywhere from 10- 60gb per day. If mine (Sandisk Ultra Plus) lasted as long as those on the endurance test (169.92TiB) and at the current rate I'm going at 60gb/day it would last me only 7.7 years.

On looking  at your samsung 840 @ 100GB/day usage it would last you about 15.8 years. Which is plenty! Expect a SSD upgrade by 2030!