Here I go with the suggestions...
ProjectRed-1.7.10-4.6.2.82-Base.jar
ProjectRed-1.7.10-4.6.2.82-Integration.jar
While I'm not personally into vanilla redstone, I feel like for vanilla redstoners out there this might be a bit too much. Redstone Paste, on the other hand, might fit a lot better (maybe throw in Funky Locomotion or Pistronics to simulate 1.8 slime blocks?)
Chisel2-2.3.10.37.jar
ChiselTones-1.7.10-1.0-1.jar
Ztones-1.7.10-2.2.1.jar
This might be a bit overkill for Vanilla, don't you think?
Pam's HarvestCraft 1.7.10i.jar
Same thing here. I'd love to see Growthcraft in this pack instead, because it adds a lot of interesting mechanics for food gathering. (and mostly because I feel like it's underrated) Although I'm not sure if it'll have enough food variety to justify Spice of Life with the default configs. Maybe you should configure it to be easier or just remove SoL altogether?
Other than that, it looks like an awesome modpack! Hopefully it will make mods less scary for Vanilla players.
P.S.
1.7.10\commons-codec-1.9.jar
1.7.10\commons-compress-1.8.1.jar
carpentersblocks\CarpentersBlocksCachedResources.zip
Really excited for these mods! Can't wait to check them out.