You should be fine. I'm 6'0" and used to fly a 'G' model C150 at a school where I was the CFI.
A C150 has a Continental O-200 engine, a C152 has a Lycoming O-235 so nominal power is 100 HP and 110 HP, respectively. Fuel burn is a few litres per hour less in the C150. Max. take-off weight is a less too.
At 20 quid /hr difference I'd insist on the C150 or take my business elsewhere.