So I like the concept but the whole totally custom brackets thing raises the question of your fabrication skills and what tools you posses.
Dont feel like I'm trying to patronize you but just thinking off the top of my head your going to need a drill press, a mill, tig welder, full access to air tools since its a bitch to cut/grind aluminum with an angle grinder, a plasma would help a ton, and I'm sure stuff I'm missing.
Thats talking aluminum. Now if you wanted to go steel you could probably get by with a cheap little flux core welder (MIG would be much better of course), drill press, and an angle grinder.
O and dont forget small heim joints with a reverse thread on one end and a keyed center link make great adjustable bracket links.
I'm really hoping to see you go through with this and post LOTS of picture
If I was you though I'd start redesigning my entire accessory setup to move everything up as high as you can and away as far as you can from where you decide the SC is going. That way you give yourself much more too work with.