Aquafeeta I think your altar looks terrific. I dont think you should worry so much about having everything on the altar. You can store things that arent used every time in other places or even underneath. Statues of the Gods are great to have but not a necessity so you are doing right by waiting till you find one that speaks to you.
The only things i consider as necessary items to have on the altar are of course the god and goddess candles, the working or altar candle, your incense, your salt, and water, and a pentacle in the center.(but even that doesnt really have to be there it just makes it seem more "official like" if you ask me
The things i listed above are the basic things you need when casting your circle and to start off any working from an esbat, to a sabbat, or a spell.
I like to put things on the altar as i need them dependant upon the work i have laid out for myself.