Kerm, why not use wire glue to make the connections easier? It would seem for a project with as much going into it as that the cost of that type of glue would be minimal. It also seems like with the right application tool it could be much easier and less stressful to use to connect wires to PCBs.
IMO trying to use a pliable material like that is going to be far more difficult to get into the right places than gratuitous amounts of flux and a fine-point soldering iron.
Also, how well does it conduct electricity and how strong is a "super strong hold" compared to welded metal?