Training for tri+ultra

angus

Im looking at potential events for 2016,  i want to an ultra marathon and a 70.3 or 2 although the events that appeal are all within 2-3 months of each other.

Does anyone know of any decent training resources for training plans/advice for targeting both triathlon and running?   i have read a couple of don fink's books but i guess where i am stuck is whether i can change the balance of training to emphasise the runs or will have to radically increase volume.  

My targets are basically to finish rather than being too competitive.  i have completed the distances for a HIM in a day a couple of times so i know this is achievable and would have to focus more effort on the runs.

any advice or suggestions for reading material would be great!