After talking to Slow and CWW I've rescinded my thoughts on GT. CWW is going to help with configs for me.
I've slightly revised what I'd like to have personally in the pack based on feedback.
1. Keep EBXL but disable most/all biomes (open for suggestions) As for why have it at all, see 2.
2. Add Mine Factory Reloaded. This looks like fairly cool mod, gives implicit permission for modpacks, and to better explain 1. has a way of producing quicksand and cracked sand when EBXL is installed.
3. Add Nether Ores (Haven't used this in the past though, so will need to take a look at configs.)
4. Add that search mod assuming it's balanced. I believe it's a clientside mod though, so I can't really stop you if you want it yourselves.
5. Potentially add MyTown soon, but for the time being +-750 blocks from 0,0 is reserved for a central spawn and 4 600x600 corner "towns"
6. Add Applied Energistics, not much else to say on that.
7. Keep all other DW mods. I know some have expressed issues with SoulShards and/or EE3, but I have no reason to believe they cause server instability (I can look at gameplay on a person by person basis)