Awesome! Watch the ornate, they tend to be bullies and pick on other polys that are smaller than them. Also feed well, these small polys tend to be cannibals and will eat other polys they can fit in their mouth. That said my worry would be for the albino sen, they just do not get that large in comparison to the others you have. I think the largest Ive seen is maybe 8" and the lap and endli can hit 16"-18" without much problem. So this size difference can be a problem or you might have easy going polys and have zero issues.
Here is a little Wet Spot info for you. They do not keep all the fish they have in the store. They have another location they ship out from. So if you order online you can usually request the characteristics you want and they can check their inventory and get you what you are looking for. In store they may have one endli but in their other location may have many. This was kind of why I suggested ordering online instead of driving there, bigger pool to choose from. Also only about $25 to have them ship it. With the endli I would say splurge on a wild caught if possible. The difference is very noticeable as adults. When young they seem okay but as they age the head has a weird shape and they tend to look a bit short. Delhezi captive born can get that 'beer gut' too so another fish I would say splurge on wild caught.