Robertjb11: I only have about 10k.
It is wise to build up at least 15 to 20 buy ins for the coin room you want to play... coin rooms are high variance and there are a lot of coin room specialist. Unless you are very good, it is easy to go on a string of losses.
Use the level up bonuses and daily spins to build your coin bankroll while playing low stakes and gaining experience. As you play higher coin rooms, you lose your forward tee advantage so you may find the games more challenging.
Either way only having 20k and risking half when your still learning is not advised unless you want sucked into buying coins which many feel are worthless.