[lubuntu] Selection of boot configuration and boot option prioroties for installing lubuntu

I am trying to install lubuntu 16.04 in asus notebook (X200LA series). I am confused with the boot options to choose. What I find do not match with descriptions available from websites regarding installation of lubuntu.

1. Should I enable or disable "launch PXE OpROM policy"?

2. Boot option priorities: What should be no 1, 2, 3 in boot options: The available options are : PO: TOSHIBA MQ01ABF..., UEFI: IP4 Realtek PCIe FE Family controller, UEFI: IP6 Realtek PCIe FE Family controller

3. Hard drive BBS priorities: currently set to be Boot option#1 PO: TOSHIBA... Should I change this? if yes, then change to what?

4. Delete boot option: Should I delete either of the above mentioned IP4 or IP6 boot options here?

Thanks.