I have never flown that plane but according to the specs the 78 will be overpowering it a bit so you will most likely have to beef up the firewall and landing gear areas. BTW, even though the engines crankcase maybe the same as the4 68 it's still a 78 puttting out the power of the 78.

Now as far as a second plane I would say it looks pretty docile, BUT that all depends on your skill level. So we need a little more info on what your skill level is