944 N/A rear discs on IRS (again)

[KaferChris]

OK, new to the Porsche brake stuff...just searched and got 18 pages of former topics to read...and painfully did so, to arrive at several conclusions...if you'd be so kind to point out any errors or over-looked pieces please do.

For my `69 Std. Beetle with stock bug trailing-arms:

924S/944/181 stub axles (plan to run 181 drive flanges out of a Type I gearbox so I can use 100mm CV's T2/T4)
83-85.5 aluminum backing plates and longer M10x1,5 bolts
Singlepot calipers
289mm X 20mm vented rotors
Internal drum brake e-brake assembly, cable modification necessary (several ways)
Increases total trackwidth 52mm (26mm per side).
36mm wheel cylinders

I plan to use stock 'Ghia discs and a VW dual circuit M/C...but should there be a brake bias problem I may try the smaller 944 bore M/C - which I've read requires modification to the rear brake line since the circuits are backwards in comparison to the VW unit...and there's also some conflict with the VW stop light switches.

Can I use my Type III rear hubs which are already studded 5-130?

Any help is appreciated. Thanks in advance.