I have a 67 which is slightly bigger, and I am 6'5" and have no problem with 10.3 hour flights from Kentucky to Florida. I find it more comfortable than an 8 hour flight to Amsterdam in an A330.

Jeff Hersom N3740J '67 150G "Gremlin"
Hangar W-6, Helena Regional Airport
Places I have landed Gremlin:
[Linked Image from visitedstatesmap.com][Linked Image]