I would not be too worried about zoanthids either. I have kept literally hundreds of species and have experienced zoa fungus and zoa pox, but it is not extremely common. Nudibranchs seem to be more common to me, but like anything in this hobby, they can be dealt with and fairly easily. You really cant beat the color of some zoanthids and they grow really well. As far as softies go, I would go with some green sinularia if you can find any. It is perhaps on of the coolest colored leathers you can get and is not too uncommon. If you ever get up this way I could throw you together a nice package of various zoas, lps, softies and if you get the lighting, eventually some sps. If you can, set up a quarantine tank for your new corals so that you know that they are safe before you introduce them to general population in you display.
Have a good one and dont be afraid of getting into some zoanthids/palys. They really are perhaps the coolest softies as a group that you can get!
Garrett