Can I install the small overlanding table at home?
Yes, you can.
Yes, you can.
It depends upon the mods you have. If you haven't changed or added anything, yes it will fit there. If you have, measurements will need to be made.
The small overlanding table was made to be a universal fitment - for any vehicle, in any place it will fit, inside or outside. Some people have put them on the inside of the rear door, fitment there will depend upon any mods you've done.