152's aren't that bad, just looking at the weight and balance graph for our club 152 with full fuel you can take 447lb of people and baggage
I'd be very interested to see how you achieve that. In my experience there is no 152 which can take two fairly normal sized adults and full fuel. Same goes for the Tomahawk. Richard, if you're above average weight I'd echo the advice of others to go for training on a four-seater (PA28/C172).
Check your PMs for some other suggestions.
NS