You can have an expensive set up, eg. Mad Professor Mighty Red Distortion, G2D Creamtone, Diamond Memory Lane and whatever.
You can have a Gibson, PRS, ESP, Fender Custom Shop or whatever..
But if all these is going through a 50 dollars amp, it would be a disgrace to your gear..
Number 1, your amplifier is the most important part of your gear..
A 100 dollar guitar going through a 5000 dollars amplifier would make your guitar sound better compared to a 5000 dollar guitar going through a 100 dollar amplifier..
Number 2, there is no specific way to get _______'s (insert band name) tone.. You can replicate EVERY single gear which is similar to that particular artist, but they way you play your guitar affects the tone.. Have you considered your picking dynamics? Whether is it an upstroke or downstroke?
Number 3, once you have a good, satisfying amp, YOU DON'T NEED PEDALS..
Trust me, my distortion pedals are gathering dust after I bought my new amp..
I used to be someone who hates amp distortion, now I swear by it..
But I still take out my pedals from time to time to add a little flavour and variety..
So this brings us to Number 1, a GOOD amplifier..
Number 4, LEARN EQUALIZATION. You say your amp sounds treblish, yet your equalization contains a FULL treble set up.. Learn about EQ, google it or search for the lesson on soft..
The guitar is a mids-oriented instrument in a band.. You can't scoop your tones (high treble and bass, almost no mids) and expect to be heard during a live performance.. Personally, my bass and mids are above half, treble below half on my amp so that the tone seems more "full" and less thin..
Number 5, if you want to choose a particular pedal, no use asking for help when you don't like it in the end. You can collate the data and feedback here, and go to an effects specialist and try out their stuff.. Personally, I rely on both the Electro-Harmonics Metal Muff with Top Boost and amp distortion to get heavy tones..
However, according to number 4, the improper use of equalization could drastically alter the tone even with a similar set up.. And again, Number 1 matters..
Number 6, you mentioned you need a good clean tone, and you wanted us to recommend an acoustic pedal.. Yet, since Number 1 is of utmost important, you need to get a good amp with a nice clean tone.. Clean tones shouldn't be derived from pedals, although i personally love a certain patch in my Zoom G2.1u multi-effects unit.. You can get an amp with good cleans, but horrible distortion, but rely on pedals for your distortion needs..
This is a very long post, so take your time to tackle these matters.. You can't wait for the food to fall on your plate.. You gotta search for it yourself.. In this case the food is information.. Now go search soft or google it!!!