First Time Out!!
What kind of timing profile is on the 318. How much initial, total and all in point?
Log book is a great tool. There are some sheets on the net you can print out or if you are a carry a computer kind, they are in digital format. maybe a smart phone can run them as well.
For the 360, fuel delivery might be where I'd think about looking. Jet it up and if it stays the same, doesn't pick up or slow down, fuel delivery issues might be present. If it slows, start leaning it out.