The Focus Sport is a great airplane. I'm not sure how it is for elec though. Looking at the cost of outfitting that Focus Sport with a YS 1.10 (which is what it was designed for) is much cheaper than the electric, cost at start up anyway. There is a down side to both. There is also an upside to both.

The engine you have now should work fine in the Focus. Given that fact the elec option is far more costly at start up it's not a money saving thing. Using the cost of glow fuel as a basis for switching to elec is just strikes me as funny. Watching the guys in my club that have switched to Electric the learning curve is steep and they've all ruined batteries in short order. There are a few that fly enough each week in a few years they will realize a savings by the switch. If they don't crash.