fool

I found there is a used SSI 4 string selling, the price is very low (US830), it looks fine and I want to buy it. but I already got SSI 5 and SSII 4, what would I do to the SSI 4 stings ?? I like to collect Warwick hi end bass like Thumb, SSI, SSII, Dolphin, Buzzard, what I don't have is...