and I hope to provide some, too.
First... what you said:
"macpro 17'' 2.8GHz intel core 2 Duo, 4GB 1067 MHz DDR3, NVIDIA GeForce 9400M"
A MacPro is a tower - so no 17" measurement. That sounds like an iMac.
"Better" (mac pro or an imac) depends on your requirements and budget. The current crop or iMacs can import HDV at real time (or better than real time - when I get to doing other stuff while importing, it may get a few % points behind real-time - then catch up. The current MacPro will do the same, the advantage for the tower will be render time whether titles, effects, DVD or computer readable video files.
The current crop of MacBook Pro laptops will also do real-time importing - and will have the same advantages of an iMac and the tower will still have the same advantages for rendering.
I have not used a JVC GY-HM100. Its specs look good - but that is all I know. It is not tape based, so expect all the same archive issues as with other flash memory or hard disc drive - but at least it does not use anemic AVCHD.
Check the lens filter diameter and imaging chip size. The single CMOS Canon HV40 is a fine consumer-grade camcorder. But it IS a consumer grade camcorder. 43mm lens filter diameter, small imaging chip. Compare that to the 72mm lens filter diameter and 1/3" imaging chips of the prosumer/pro cams. Bigger is WAY better and needed for capturing well in low-light environments. With most of the controls accessed via menu (not on the outsidide of the camcorder) and the small lens and imaging chip and the 1/8" (3.5mm) audio-in jack, the HV40 is purely a consumer cam and nowhere near prosumer (like the Sony HDR-FX7).
What is your budget?
RODE makes good stuff. I like Shure, Audio Technica, AKG and Sennheiser better.
Sony "Professional" full muff are common.
Tripod and head:
Bogen Manfrotto... but it sounds like you are heading down a path there...