Trans Swap Complete, Driven And Know I Got A Few Questions

Completed the swap about a week ago, this is my first manual car that I've driven and can now drive the car pretty smoothly, but my brother did notice that the clutch pedal is stiff as heck, I got behind the wheel of his civic and mx3 and clutch pedals on those are a lot softer than mines. Is this common on our cars? if not what do I adjust? my brother thinks it's the pressure plate, but I've seen some post about the clutch cable (mine is a stock clutch cable from a donor car, new $52 dollar throw out bearing btw) the clutch disk and pressure plate are supposedly the cobra clutch set made by Valeo, it does say Valeo and the pressure plate has a number on it that I checked which checked out true, not sure about the plate though (ebayed)?
The only problem I have though (remember new b here except for the stealth R/T manual trans I've driven in a dealership) is getting it to engage into 1st gear without the stalling and dieng on me. I think I gave a lady a scare when she was walking across the street and I was trieng to keep the car alive.

Im going to add that: perhaps the reason I can't engage it into first gear softly as might/might not have that tps incorrectly adjusted or some other problem with vacuum. Even with my automatic transmission voltage on my battery would go up and down (slow movement) like it wanted to stall, end this reflected also on the engine idle going up and down as well.