Help For a Skill Surf server

Hello ,
I want to do a surf server but i don’t now what is the best config i must have?
sv_gravity 750
sv_sticktoground 0
sv_stopspeed 75
sv_friction 4
sv_accelerate 5
sv_airaccelerate 5000
sv_maxvelocity 15000
sv_noclipspeed 10
sv_turbophysics 1

Can someone tell me what i must change? And if someone have surf maps compatible for gmod , can you tell me a download link?

sv_airaccelerate 100 is all you need

Ok thx ;D And Where can i download surf maps?

http://css.gamebanana.com/maps/cats/56