Decision time. Your thoughts?

I know some of you have followed my story of my recently purchased 69 cj5. Just want a reliable fun jeep for around town and trails. Had to replace my rear main seal cuz it leaked terribly. I did not want to pull motor and have this turn into a full scale rebuild. I know myself too well, kind of a perfectionist and can easily get sucked into full rebuild. Anyway, wanted to de-sludge oil pan, valve covers, intake to clean up engine compartment and get the grime out of the internals.
With that said, found and cleaned huge amount out of oil pan, steam cleaned pan, painted it, all good.
Pulled valve covers tonight...WOW. Very hard for me to just clean valve covers and bolt them back on these heads. 80,000 on motor, runs good, but honestly think you could count the oil changes on one hand, no joke.
Two questions:
If I pulled the heads and kept then assembled, put them in our degreaser/cleaner we have at work, had them spit and shinny, would it benefit me at all besides knowing heads are clean under the valve covers?
Second, is it worth it to dis assemble heads completely, clean everything, maybe put a mild lap on the valves, re-assemble all the parts "as is" without changing out parts, and without having a machine shop go through them?
I attached a pic, hard to see, but they are GRIMMY. Trust me, I know a motor is a motor, but the sludge and chunks and crud are freaking me out a lil.
As always, THANK YOU guys for your input and expertise. Always appreciated.
P.S. Hard to see in pic, but the stuff inside valve cover barely resembles oil. So sad someone treated a great all purpose vehicle so badly.
I guess another option is button her up and run her to the grave, but hate to do that...

http://imageshack.com/a/img836/7365/wox4.jpg

Thanks

 

I'd clean the heads as installed on the engine best as you can, then run it.
Change the oil a couple times and run it.
If the compression and leakage tests are okay, why fix it if it ain't broke?

 

I rebuilt the oil pump and put new timing chain in and made sure I had a oil pressure gauge on mine. I haven't had a chance to clean the rockers (mine look worse..), but jeep seems to run good for me.

 

Right on thanks. Compression is good. What is a good leakage test?

 

2x! I see no purpose in all the extra work pulling the heads to clean. You will still have that gunk in the rest of it. If you use a high quality detergent oil and change it frequently, I suspect most of it will eventually dissolve. The heads would only come off if the compression is bad and it probably would be time well spent to do that test.

 

If it ain't broke don't fix it. It may outlive all of us.

 

I agree with all above. I have seen much worse that ran just fine for years. In fact, the sludge build-up came along with time and it had to run to get to that point.