This would be for my sa/ca cichlids. Would you want a 150 gallon(72Lx18Wx27H), or would you want a 140 gallon(48Lx26Wx26T)? Which do you think would be better? Also what would a fair asking price be for the 140 gallon? It's acrylic and has some scratches. It would come with a DIY wooden stand. Thanks for your input!