Let me do these in order:
1. You are allowed one bass. The right to more basses is tied to your proficiency level, and only after having aquired the necessary proficiency are you allowed to aquire further basses. You must also make certain that none of your new basses encroach upon the territory of the old one.
2/3. The Order of Exalted Bass Players admits those who are ready. It is entirely up to you to decide when you are, and apply for admission. However, should there be a consensus of two or more of your peers that you are still not worthy, your bass aquisition privileges will be revoked, your basses will be liable to seizure and destruction, and you yourself will be the object of ridicule and derision in public forums. This is an international practice within all lodges of the order.
4. You are not allowed red basses until you have risen to the degree of Most Revered Plucker of the E-string in the Order of Exalted Bass Players.
5. You do not become great faster if you donate your surplus instruments, but if you do not, you will never become great at all. It is not possible to become great if you own several instruments. Only the already great are allowed more than one.
6. You will be made aware of any secret signs if and when you are admitted to the Order of Exalted Bass Players. Do not seek to know more.