I would have asked for a guava, but I don't have anything to trade that grows in Florida. But I have a suggestion, you may try posting this on the plant exchange or the Florida exchange, since these are seedlings you have to trade. Since this is the seed exchange, most people are just looking for seeds.

I have orange fleshed guava seedlings and red carribean papaya seedlings for trade. Looking for almost any other fruit trees.

Ok, I can't get the preview page to let me get to the "browse" option, so I guess I won't be posting my pictures on here.

Your papaya is history, but they are never going to survive in the ground during a zone 8 winter even with protection anyway. You could try to grow them in a large pot like a half whiskey barrel. I've fruited them that way, but you'll have to bring them inside from November through March or April. Buy some hermaphrodite seeds from Aloha seeds so you don't get a male. Supermarket papaya seeds can sometomes produce male plants that don't fruit. You avocado is probably toast, too. Zone 8 is really pushing it for them. You could try a dwarf avocado in a barrel. Guava is a possibility, especially a strawberry type (Psidium cattleianum). They tolerate cold pretty well and much better than tropical types and they taste great too as long as you don't mind the the rock hard seeds. Here is a link that might be useful: Aloha Seeds