i'm lazy at researching
Basically just keep adding stuff to your pack until you get it the way you want. I don't really have any specific tips, other than just make it work. Deal with trial and error until it becomes perfect.
If you want an external frame, build one. If its wet out, wrap it in a trashbag. Waterproof it with wax if you want. Sew extra pockets or straps onto it.
Basically the possibilities are endless if you just get creative with it, ghetto rigs always seem to work out pretty well as long as you put the effort into it.