[glend (Glen)]

I am considering getting the Hyperstar lense for my Edge HD8 and i am looking for some feedback from those that might have done this before. The attractions of f2 imaging are significant. I would be purchasing a ASI non-cooled OSC camera to use with this setup for broadband, as cooling should not be required at f2, or is it?
Specific questions:

1. I assume the 0,79x reducer corrector is overkill or wrong, at f2.
2. I assume guiding is not required at this speed for broadband, but on faint targets or narrowband, i could see a need but probably a simple guidescope would suffice?
3. Do camera cables crossing the front affect image quality, or induce diffraction spikes?
4. Re narrowband, with my mono cooled camera, does the TEC exhaust heat plume affect the image, and is there an easy way to change the filter (assuming no filter wheel obviously)? I know Starzonia recommend a wide spectrum narrowband filter (like 10nm) due to shifting that occurs at very fast f ratios.
5. Given the speed, are light pollution filters required for any broadband use other than dark sites?
Any general advice?