[Help] Modifying JB GApps Package - Android Q&A, Help & Troubleshooting

Device: gt-i9100 (cm 10.1.3 stable)
Package: gapps-jb-20130812-signed.zip (cm 10.1 gapps)
I was planning on slimming down the package to something like pico gapps (system base, calendar sync, play store, play services) for higher Android OSes, but I'm not sure where to start. Any information about the files are welcome.
Priority:
Removing stuff
Editing scripts (where applicable)
Repackaging
Signing (optional)
File structure:
Code:
/gapps-jb-20130812-signed
/META-INF
/com
/google
/android
update-binary
updater-script
CERT.RSA
CERT.SF
MANIFEST.MF
/optional
/face
/addon.d
71-gapps-faceunlock.sh
/app
FaceLock.apk
/lib
libfacelock_jni.so
/vendor
/pittpatt
/models
/detection
/multi_pose_face_landmark_detectors.7
/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32
full_model.bin
/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32
full_model.bin
/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-2
full_model.bin
/yaw_roll_face_detectors.6
/head-y0-yi45-p0-pi45-r0-ri30.4a-v24
full_model.bin
/head-y0-yi45-p0-pi45-rn30-ri30.5-v24
full_model.bin
/head-y0-yi45-p0-pi45-rp30-ri30.5-v24
full_model.bin
/recognition
/face.face.y0-y0-22-b-N
full_model.bin
/system
/addon.d
70-gapps.sh
/app
ChromeBookmarksSyncAdapter.apk
ConfigUpdater.apk
GenieWidget.apk
Gmail.apk
GmsCore.apk
GoogleBackupTransport.apk
GoogleCalendarSyncAdapter.apk
GoogleContactsSyncAdapter.apk
GoogleEars.apk
GoogleFeedback.apk
GoogleLoginService.apk
GooglePartnerSetup.apk
GooglePlus.apk
GoogleServicesFramework.apk
GoogleTTS.apk
LatinImeDictionaryPack.apk
MediaUploader.apk
NetworkLocation.apk
OneTimeInitializer.apk
Phonesky.apk
QuickSearchBox.apk
SetupWizard.apk
TalkBack.apk
VoiceSearchStub.apk
/etc
/permissions
com.google.android.maps.xml
com.google.android.media.effects.xml
com.google.widevine.software.drm.xml
features.xml
/preferrec-apps
google.xml
g.props
/framework
com.google.android.maps.jar
com.google.android.media.effects.jar
com.google.widevine.software.drm.jar
/lib
libAppDataSearch.so
libfilterpack_facedetect.so
libfrsdk.so
libgames_rtmp_jni.so
libgcomm_jni.so
libgoogle_recognizer_jni.so
libgoogle_recognizer_jni_l.so
libgtalk_jni.so
libgtalk_stabilize.so
libjni_latinime.so
libpatts_engine_jni_api.so
libplus_jni_v8.so
librs.antblur.so
librs.antblur_constant.so
librs.antblur_drama.so
librs.drama.so
librs.film_base.so
librs.fixedframe.so
librs.grey.so
librs.image_wrapper.so
librs.retrolux.so
librsjni.so
libRSSupport.so
libspeexwrapper.so
libvcdecoder_jni.so
libvorbisencoder.so
libwebp_android.so
/tts
/lang_pico
de-DE_gl0_sg.bin
de-DE_ta.bin
es-ES_ta.bin
es-ES_zl0_sg.bin
fr-FR_nk0_sg.bin
fr-FR_ta.bin
it-IT_cm0_sg.bin
it-IT_ta.bin
/usr
/srec
/en-US
acoustic_model
c_fst
clg
compile_grammar.config
contacts.abnf
dict
dictation.config
embed_phone_nn_model
embed_phone_nn_state_sym
endpointer_dictation.config
endpointer_voicesearch.config
ep_acoustic_model
g2p_fst
google_hotword.config
google_hotword_clg
google_hotword_logistic
grammar.config
hmmsyms
hotword_symbols
lintrans_model
metadata
norm_fst
normalizer
offensive_word_normalizer
phonelist
rescoring_lm
symbols
install-optional.sh
Edit 1: If I'm wrong, feel free to explain
Removed these since I don't use Face Unlock (files related):
Code:
/optional
install-optional.sh
Removed the following apks according to what I know/inspecting inside the apk:
Code:
/system
/app
ChromeBookmarksSyncAdapter.apk (this is what syncs Chrome bookmarks to stock browser I think)
GenieWidget.apk (old Google News & Weather app)
Gmail.apk
GoogleEars.apk (Sound Search?)
GooglePlus.apk
GoogleTTS.apk
QuickSearchBox.apk (Google Search app)
TalkBack.apk
VoiceSeachStub.apk (this comes with the Google Search app I think)
I am willing to mess around just to learn
Side note: If this is the wrong section, can someone please move it in the appropriate one, thanks in advance