1 word to say if u wana keep sps (good luck) $ is not the key to sucess. With your setup it only good for LPS . I am not out to spoil you but a words of kindness.
In the first place if i don't steal and they wana cheeck my bag , ok after they had check and found nothing it my time to call the police and later i will follow up with my lawyer letter.
So what do you really want? Going around biding and offering to buy peoples tanks from 3ft to 6ft and end up flying areoplane. If you don't wana buy and cannot make up your mind , Don't mess with peoples thread.