I put 4 different kinds of plants right into my reef system with no problems. I would dip them in fresh saltwater because they reek after shipping. Make sure you clean off any substrate that is left on the roots from the sellers. I noticed the paint brush plants tend to have a lot of that stuff on their roots.
I had paint brush, grass, and that purple stuff, and some kinds of green round stuff all in the tank at once with no problems. I am not sure about the bugs if there are any but just make sure you get your stuff at a reputable seller.