I'm sure the G62 will pull it along in a scale like manner, they've been flown that way for quite some time. I'm thinking the all up weight will be 30+ pounds. I believe you will need the weight up front anyways to get the c.g right . If your not satisfied with the G62 after flying it a Sachs 4.2 would be a good second choice.
I think you're right. The G-62 should power the big Cessna well.