So I want my character to have a non-key blade weapon for a long period of time before EVENTUALLY achieving a key blade. But I'm wondering. Having a non-key blade weapon does it make me weaker then key blade weilders?
Working up to a keyblade in the future is the right mindset to be in on this site. Aside from canons (even canon character keyblade-wielders require well-created applications), we don't allow members to start with keyblades. However, we are going to be opening up contests again to allow the possibility for more to be earned down the road. You can expect this in the coming revamp!
As for making you any weaker - not at all. Everyone's power is seen on more of an equal plane here, and it's up to the RPer to come up with creative ways to use what they have. So, someone wielding a gun, and someone well versed in the ability to fight with turtle shells... might actually be on fairly equal terms, as long as the RPers were able to feasibly make that happen.
I hope this clarifies any question you had. ^_^ Let me know if I can help with anything else! -Era