Lots of options. It is pretty much as you stated and they can be replaced by many different options out there.  For a while I just had some toggle switches for on/off and start.

This what I am currently running.  A momentary perch switch for start on the right side and the basics on the left.

The parts are from various bikes.

The clutch lever is just a honda dirt bike clutch lever I had laying around. These usually come in black or polished.

The brake master and lever are from a big scooter. I found a Suzuki Burgman 650 that was totaled, but the master cylinder was pretty much new.  I think they normally come with a black master and a silver lever, but I found a black lever online.

The throttle housing is also a dirtbike item.  Its a Honda CR throttle housing.  The cable is super easy to route and works perfectly with the Keihin or Mikuni pwk carburetors (aftermarket item). Its just butted tight against the brake master so maybe it doesnt stand out, but its there. By the way, that is a 7/8" throttle.  As far as I know there isnt a off the shelf way to run a CR cable with a 1" throttle (which is stock on the savage).

The turn signal/headlight/horn housing is not too difficult to wire in.  It doesnt have a matching loom so you have to splice into the stock system.  I like it a lot, the only gripe I have is that with a glove on its hard to find the middle point of the turn signal switch. So often I have to fiddle with it a bit to get the turn signal turned off. In the meantime Im driving down the street like dorp on motorcycles flashing left and right signals over and over again.  

Im currently making a database of what cables and hoses are needed for various bar heights and will be bulk ordering them and selling them in kits. Thats still a few weeks down the road.

Ill send you a pm about where I got them.