Congratulations on reaching 80 hours, especially given the hard fight you are forced to endure. I agree with both Archus and Kozz. I think it's great that you achieved what you have. Each fast will contribute to the elimination of you toxemia and your attitude of wanting to continue pursuing more fasts to heal your body is in a great place.
Regarding frequent fasts, i agree with you that with these shorter fasts it is far less of a concern. It's when a person engages in long fasts (20-30-40+ days) that there should ideally be 2 or 3 months of nutritious refeeding in between.
As to starvation, i agree again that there is a lot of inappropriate hysteria about this in the general population which surrounds fasting... however the possibility of starvation is real. Anorexics for example slowly starve themselves daily through falling short of their nutritional needs (mal-nutrition). If a person was on a "water only fast" but added vitamins and minerals, the same danger would exist as they would no longer be relying upon their internal reserves and will have interfered with and disrupted these processes.
both broths and juices are so triggering for me that I would probably way overdrink them and maybe hurt myself.
If vegetable broth is a triggering food, then thank God for this! In terms of health and nutrition i can't imagine anything better to binge on. I strongly believe that you can have 4 liters per day of this broth with only benefits.
Vegetable juices would also be great, especially if you include celery, cucumber and other greens. I know you have said you need to avoid sugars or carrots, beets and apples would be great too.
... I hear all the time about not using fibrous foods immediately post -fast... but.. I intuitively really sincerely do not believe this.
You're certainly entitled to your opinion on this. My perspective simply is that juice is the most digestively simple food on the planet. Whole fruit requires the body to work to separate the juice from the pulp. Normally this is easy work, but immediately post-fast the digestive system is temporarily not at maximum capacity and while juices are simple, whole fruits are comparatively difficult.
In breaking a fast of only 80 hours, to tell you the truth, whole fruit is generally fine, in this case it seems more an issue of quantity. Part of the problem i have with breaking fasts with whole fruits is that it can be extremely difficult to limit quantity as our awakened appetite can be quite ferocious. To gradually re-engage the digestive system with optimal caution after 80 hours, i would encourage juice first, for a full day or at least a half day. But to repeat what i stated earlier, you are certainly entitled to your opinion on this :).
Congratulations again and i'm sure you'll tackle your next fast soon.