Follow up: I was told by the CFI pre takeoff that we would need to remain in ground effect after lift off in order to build speed. Like a short field even tho we were on 4k+. He kind of had me apprehensive before we ever crammed into the plane. Said climbing would be slow as I expected he would say, but his whole attitude towards the plane was on the negative side. Therefore, once we were at pattern altitude, I kind of already had it in my mind I wasn't going to enjoy the flight. At one point I think I even said that I couldn't see myself ever renting this thing and thought about ending the checkout right then. We proceeded to do the normal manuvers and slow flight to be expected in a checkout and i felt a little more comfortable with it. By this time, i think my attitude was already deflated enough and i chose to terminate the checkout so I could decide wether or not I really was going to ever rent the thing.
Couple of hours later after thinking about it, I think my head was more interested in how not to crash this perceived death trap instead of learning a new aircraft. I have chosen to give it another try only with a better attitude.
For some reason I let him psyche me out before we ever got in the plane. After the flight, he told me that I was the first student for him in a 150 and after reading into what he was saying he hates 150s.
My conclusion: 150s wouldn't be so popular as trainers if they were really always trying to crash and I was buying into his hate for the plane before I gave It a chance for myself...