Absolutely it can be done. One of my friends just converted a Senior Kadet to electric.
Disadvantages: Cost more money, batteries are not as expensive as they were but still cost a substantial amount. Motor and controller can take a bite out of the pocket. You will need to buy a good charger for Lipoly batteries and a 12 volt battery or one of the portable battery supply's to charge the batteries at the field. (it is a safety issue of possibly catching your car on fire if you charge from your car battery, your car battery won't catch fire but if the planes battery isn't charged right it can burn rather profusely)

Advantages. Easy to set up at field, not a lot of noise, not a lot of dead stick landings, no messy fuel to clean off of plane when you are done flying just pack it up and leave. Motors are just as powerful if not more so than glow engines. No fine tuning of the engine just plug it in and go the settings will be as they were when you last flew.

I fly electric.