Suggestions*
type (without the ">") in console:
> impulse 101
> mp_buy_anywhere 1
> mp_buytime 99999999
this way you can even buy moly and tazers
I would advise to set sv_infinite_ammo 0
instead to get more realistic training effect
just go to side and click on the gun you want for ammo
or simply bind a button to console command:
> givecurrentammo

This is a great map to train
you can set burst fire to a big target (size 24?) and practice recoil spray with the ak47
it would tell you how many bullets you missed and how many hit the target

for practicing side steps start from big targets like size 12 or 8 then move to 5 eventually
start from static targets before moving to others because they are really hard.

when using a gun that isnt a 1 shot head shot set shots to kill to 2
sv_infinite_ammo 0 would help you control how you spamm your bullets with the m4a1 or famas and deagle

*dont spam with guns that's got very little ammo

hope this helps