If you are flying out of Sedona (KSEZ) that is at nearly 5,000 feet. Full Rich mixture - especially in this software - will not work well. Before takeoff set the parking brake and push the throttle to get 1800 rpm. Pull the mixture back slowly until you get maximum rpm. That’s the only way you can set the mixture in a 152 not equipped with an EGT gauge.
FLAPS: In the 152 I used to do my takeoff roll up to about 60+ knots indicated and then drop 10 degrees flaps. It was like hitting the UP button on the express elevator… but only for about ten seconds. Before I lost that bit of help from the flaps I would level out and retract the flaps, holding my altitude without any climb at all until I got past 75 knots. Then, and only then, I would gently pull back on the yoke to climb at 75 knots indicated. On a hot day at 5,000 feet MSL you may not even get 500 feet per minute in a 152.
Hope that helps! 