Just wondering, which makes more money per hour, gathering mort myre fungus, or catching red chinchompas?

I'd reccomend red chinchompas at a higher level.

If it's between the two of them, then you should do red chins at least until 83 hunter. Fungi are no fun if you aren't getting any experience out of it, so go with hunter at least until you've unlocked everything you can from it (that is, dragon implings). I do not regret getting my hunter up to 83, as I've caught at least half a dozen dragon implings since then and I'm likely to find more. The fungi are probably faster, but unless you're already higher than that in hunter, the experience you get makes up for the decrease in profit by allowing you to randomly get a free 500k.