Right...

Armour: 5mm titanium Okay, perhaps a bit weak but alright.

Weight: 100lb Heavyweight robots are 100kgs, and according to Google 100lbs works out at 45.36kgs. Somewhat underweight :P

Batteries: 2600 NiMh This is under dispute, but for a first timer I dont think going into extreme detail about battery capacity is really needed. You have two LEM130s, so you might be better off with NiCads, six NiCad packs should do it - these weigh about 10kg I believe, could be worn but thats what Storm II uses.

Weapon: Hydraulic crusher/lifter This is a problem - with two LEMs, tracks, and Ti armour, so I dont think you can get a hydraulic crusher/lifter in the remaining weight - again, though, I could be wrong.

The main problem I see is that you appear to be taking the basic idea of real robots and modiffying things without appreciating the weight and size requirements - indeed, you havent actually specified a size. Id advise you to look at what Leo posted in the archives, and take his advice by designing something, putting it in the stats he listed, and then posting it here so we can get a better idea of things and give more constructive advice.
While youre at it, try coming up with some designs of your own too.