Big blokes/girls are nearly always having to twist to fit in the C150/C152. If its not your height its your shoulders that start interacting with the instructor unless the half turn round and stick an arm behind the LH seat.
If you have a 6stone burd as an instructor its not so bad but any decent sized person instructing and you can start playing the if i shut my door the other one pops open game.
If there are any PA38's in your area go for them it will be more comfy and also the handling of the aircraft will make you a better pilot.