I can start the tank with the current rock I have. Might be a little light, about 5 or 6 lbs short, but adding a little at a time til it suits my idea of a minimal rockwork design can be done little by little. I need 60 lbs of sand...only using a few cups of my current sand to seed my 60...I need to buy acrylic for the corner overflow and saw/bend it, then I need to plumb the overflow for the sump...then I need to buy water...and I need a bigger return pump...yup, that would do it.
Yeah so what are you waiting for? Lol Jk take your time do it right so you have more time to enjoy it.