Cluch problem

I fix my tranny 1 month ago, I put the exeddy cluch (like oem). I didn't notice that the cluch was't harder enough until i try tu run it a few days ago. I put the car at 7k rpm, press the cluch, first gear and release the cluch, when the car start to move I was almost in the rear seat (for the aceleration ;) ) but the car gets stocked in 7000 rmp until I press the cluch and put 2nd gear.
The cluch is new and I don't want to take out the tranny again to change it (to much work :banghead: ).
I put that cluch cause I thought that the HP of my car was the original or not so far.
May you check my mods and tell me (more or less) how much hp I have, (i did't put the stickers :) so I loss a couple of hp ;).
Thanks.

That clutch should be fine at your power level unless you abuse it or it was installed incorectly. Did you get the flywheel machined? And what step height did you have it cut to?