Thanks for the great support so far. As everything is working now, I made a bootpack here for the future users.
I made some modifications:
-VoodooPS2Controller-V8Test6 instead of R6. The R6 makes the touchpad laggy and "your keyboard cannot be identified" showed up at installation. V8Test6 works amazingly smoothly.
-Moved ACPIBatteryManager into LE folder - I needed to install it to get the battery meter.
-Changed SMBIOS from MacBookPro 11,2 to iMac15,1 because I got the black screen issue, so I followed this instruction.
I made this based on my observations, so please let me know if I got something incorrectly. Thanks.
M4800 - Sierra - BCM94352(DW1550).zip