You seem to have a lot of different complex instructions and it looks as if you want to play the game a a lightning pace. As a general rule lower league players can't deal with an overly complicated approach so losing some of those instructions might help. Also they likely don't have the stamina to cope with constant pressing and a high tempo. Also bear in mind that if players are more expressive they are more likely to give the ball away.
You're essentially playing 4 fullbacks. This could actually be counter intuitive because they may just get in each others way or give the opposition to much space in other areas of the pitch. Lower league teams tend to play quite direct and play the ball into the air, having traditional centre backs who can head the ball is the best way to deal with this.
Don't worry too much though, defenders in lower leagues tend to be clumsy and error prone. Unless you come over all Tony Pulis, it's inevitable that you'll concede. I'm a bit of a student of Paul Lambert, so for me, it doesn't matter how many the opposition score, as long as you score more!