Hi James,
With figs, 3 months before winter you still are not toooooo late . So you're not late.
Last year I removed 2 root shoots from my Dalmatie tree1 beginning of September.
I threw them in an 80liters trashcan full of compost+dirt. Last Saturday, one had already 3 true leaves, the other one had 2 buds with 2 leaves .
No babysitting, no gnats, no dirt at home ... and they made it - but those were cuttings from my trees so I chose the best timing for that ...
Of course I'm not expecting to have fruits from them this year ...
The only thing getting me crazy is looking at some brebas turn yellow ... Man that kills me ! But ok, it is not the appropriate time for looking already at the results ... Harvests are still to come in some 2,3 months,
so don't panic ... But plant those cuttings in your 8b location, in the 5b it is perhaps toooooo soon even now !