Hi. Adventure might be the defining word. A number of RVers on this forum have reported taking RVs to Alaska as a way to minimize costs. The timing of your proposed trip *could* be a problem. I have not been to Alaska (yet) so I can't be any more specific about the weather there in April. But, I can tell you several things that might help your decision making. This past May a member of the Roll Call Alaska 2014 group was delayed a couple of days just after crossing into Canada because of snow covered roads. Additionally, the weather in the northern US in April can be cold and snowy. It is not unusual for it to snow in here in Pittsburgh in April, and we have a milder climate than Chicago and the northern plains. Temps. some nights have been below freezing in Pittsburgh in May and certainly in April, so I would expect below freezing temps in northern Canada and parts of Alaska. Having said that, I know parts of coastal Alaska in the South East often don't see freezing temps. Given the climate you are coming from, have you ever driven in snow or on ice covered roads? If not, an RV might not be the best first-time experience. Good luck with your decisions.
Bob