I'm looking for a MOLLE mounted hands-free flashlight to go on my FLC, but I have no idea what all is out there and whats decent or crap. 

I don't want one of those tiny little "task lights" that only puts out a couple lumens for reading maps and stuff, I want a light poweful enough to walk through the woods with. I'm guessing the angle-head style is what I seek, but like I said I don't know much about my options with this style of light. 

I'd prefer USA made (not a requirement, but definitely prefered) and I'm willing to buy surplus as long as it isn't too beat up. Don't need IR capability as I have no NODS and won't for a long, long time. 

So, what are my options?

Streamlight sidewinder or Sidewinder II?

Not sure about the use you are describing. Just about any MOLLE mount is going to bounce around while moving and make you a huge target in non permissive situations. Based on walking in the woods situations, I would strongly recommend a head mounted flashlight if not trying to be sneaky. Head lamps illuminate where you look.

I do have a several of the County Comm task lights that fit onto MOLLE web straps.

I have one of these:

QUAD TACTICAL MPLS

I just use it as a headlamp but the strap comes right off to attach it to molle.

Looks like all the Princeton Tec tactical headlamps are like that.

I also have a Petzl Tikka and it doesn't look like it can mount the same way.

Get a headlamp.

Your options will expand 100 fold, it points where you look and won't bounce around as much.

Absolutely this.

I messed around with a carried-mounted light and it sucked, hard.

The Klarus AR10 might do what you're looking for.  It's a 1080 lumen light that converts between straight and 90 degrees.  It also comes with a metal belt clip that you could hook over the molle, in theory.  I don't run it up front but it does fit into a taco real well:

Olight H1R Nova.... might triple as a headlamp, pocket light and work with molle??

All options I am aware of:

Streamlight Sidewinder (Versions I and II)
Surefire Helmet Light w/ MOLLE adapter
Firstlight Tomahawk w/ TRS Adapter
Princeton Tec HL w/ MPLS kit
Any HL that can be removed from the headband can be mounted to MOLLE (IE Petzl Tactikka)