Set them all fully clockwise, front and rear.
Compression and rebound are just that, the rate the spring compresses, and rebounds back.
Basically, you want to push down fast and hard on the forks and rear seat, while someone holds the bike upright.
You want the forks to go down smoothly, and snap back to their laden position(you on bike)as quickly as possible, without a double bounce at the top.
Sag is set like you are doing, but it's fine tuned on the road side.
With all settings fully clockwise, sit on it, go for a short cruise...it's going to handle awful.
Now, go 4-5 clicks counter clockwise on the rebound or compression on the forks.
Sit and/or ride again. Now do 4-5 clicks cc on whichever you didn't do.
You will feel a big difference, and 4-5 clicks cc is going to get you in the ball park.
For the rear, same thing, only try 12-15 clicks cc from full right/soft.
Playing with it like this should help you to get a good feel for what adjustments to make.
Forks too stiff over bumps, back off 1/2- 1 click on compression.
Rear shock feels lazy, not returning to ride heigth quickly, or feels like it floats around the top of the stroke, then add rebound.
One adjustment at a time will make it easier too.
You are just trying to make the suspension soak up the bumps, without transferring that motion to the bars and frame...which upsets the handling.
The suspension travel should be broken down into 3 parts.
How much it settles "sags" under your weight should be the bottom third, the middle third of the stroke should be where the suspension does most of it's work.
And the top third should be your like your over rev, the travel needed to soak up big bumps, potholes, etc.
I think if you play with it, you'll get frustrated, lol, then after enough clicks and it starts to get close to right, that you'll feel it, and know what you need to do.
If you search here for "Jinkster attacks suspension", it'll walk you through it.