Hybrids are a bit more complicated (one reason why I like'm), but not difficult. A big issue (especially in Florida summer) is maintaining cool bottle temp. Otherwise the density causes poor/degraded performance.
Timing ignition isn't an issue as long as you can see the venting (look left/above the gold band in my pic)
Clusters *require* high current - best with a relay/battery at the pad. Clip whip = friend