X2 on the filter fabric. It's required and standard here. I'm fortunate as I had street drainage to tie into. (Granted I'm on a third acre lot) You can't be too careful with the drains. I have my perimeter drain running through a foot of crushed stone with the filter fabric above. The a separate drain piping all the gutters into the street drain. Given your situation, you can drain everything to daylight in the back yard and achieve the same results.
40th Anniversaary X14
'97 Prostar 190 - LT-1 (For Sale)
Prior boats - 2009 X14, 2008 X14, 2005 197, 1988 Tristar 190, 1989 Prostar.