The 4-line pim would take a couple months to get there, my lfs would sell one for around 30, the Lima is a fairly common fish but at smaller sizes, elongatus only gets to a foot, the true lima is said to reach 2'. That being said it's likely an elong. and due to that it'll probably grow really slow right now, like the pims rate. If it's a true Lima, it'll probably slow down at a foot. For pricing I'd say similar to the pim. And for the tsn, don't do it if you don't have plans of getting a large enclosure, like over 1000g. Rays require a lot of floor space from my knowledge so that may not be a wise route either , however, if you can't get ahold of a tank that is not only long but wide front to back. Pricing for the ray I can't say, but tsn are really common and cheap. One that size I wouldn't pay no more than 15 for. Other wise get a smaller one and grow it to that size quickly. They grow 1-2" a month I believe. Possibly faster.