So went ahead and cleared off the strongback to begin the process of getting this monster level. Took my big level all the way around it and except for a few areas it is pretty darn level, to the point I do not think planning would achieve a better result. So I am going to go with it.
Also since I cannot epoxy anything yet; I took the liberty of cleaning up the shop. It was getting pretty cluttered and hard to find stuff without stepping over a pile. Kind of like my dad in that regard, his shop was usually a mess. It was only made worse when he had a project with a correlative ratio being the size of the mess proportional to the size of the project lol. Maybe tomorrow I can get to work attaching some frames to the strongback and or providing any extra attention to said frames if needed.