O a manual install wont break ur game ,just a better way of installing huge files.
When you manual install it will overwrite the old version of the 3in1
Manual installation made no difference. Here's my load order but I can't imagine what would cause conflict with just the IR part of Sim Settlements.
Fallout4.esm=1
DLCRobot.esm=1
DLCworkshop01.esm=1
DLCCoast.esm=1
DLCworkshop02.esm=1
DLCworkshop03.esm=1
DLCNukaWorld.esm=1
Unofficial Fallout 4 Patch.esp=1
ArmorKeywords.esm=1
AWKCR Paint System Simplified.esl=1
SimSettlements.esm=1
Sim Settlements VIS-G Patch.esl=1
AWKCR - No More Decals.esp=1
AWKCR Workbench Removal.esp=1
SimSettlements_MegaPack_YearOne.esp=1
ruined_simsettlement_addonpack.esp=1
WVSimSAddon.esp=1
X01Light.esp=1
console.esp=1
Crimsomrider's DLC Ammo.esp=1
EBMD_AllInOne.esp=1 (even better mod descriptions)
SkjAlert_All_DLC.esp=1
ImmersiveVendors.esp=1
Quieter Settlements - Vanilla.esp=1
Quieter Settlements - Wasteland Workshop.esp=1
Quieter Settlements - Contraptions.esp=1
BetterJunkFences.esp=1
LongerPowerLines3x.esp=1
BetterSettlers.esp=1
BetterSettlersNoLollygagging.esp=1
Faster Terminal Displays (20x).esp=1
Insignificant Object Remover.esp=1
Vivid Fallout - All in One - Best Choice.esp=1
BalconySupports.esp=1
AdrenalineRush.esp=1
NightPerson_NoNightVision-FarHarbor.esp=1
BetterOpenSeason.esp=1
W.A.T.Minutemen.esp=1
DV-Durable Vertibirds.esp=1
DV-No Levelled Vertibirds.esp=1
Unofficial Fallout 4 FDI Patch.esp=1
EBW-Merged.esp=1 (expanded ballistic weave)
NukaVimRack.esp=1
Quick Save.esp=1
MMP4APA-blue.esp=1 (power amor paint)
MMP4APA.esp=1
VIS-G Item Sorting.esp=1
VIS-G Item Sorting Vanilla Weight Patch.esp=1
VIS-G Tools As Junk Patch.esp=1
VIS-G Tools As Junk Patch - Vanilla Weight.esp=1
OVT.esp=1 (optimized vanilla textures)
NMC Bundle MEDIUM.esp=1 (nmc Textures)
DD_All_the_COncrete.esp=1 (stackable foundations)
DYNAVISION.esp=1
vertibirdgrenade.esp=1
Vertibird Altitude Fix.esp=1