need advice on April travel

My friends and I are going to visit Alaska in the 2nd week of April. I know it is not a good time in the year now, but we have no choice due to our busy schedules.

We will arrive in Anchorage and depart from Fairbanks. Here are some specific questions I'd like to know. Thank you for your help!

  1. We are going to see the Matanuska Glacier and found some tours. Is 2 hours enough to see the grand view of glacier? Do you have any suggestions on guided glacier tour?
  2. We also want to visit Denali National Park; will it be redundant with Matanuska? What can we expect at that time? How long should we spend on it?
  3. What about south part of Alaska, Seward, Kenai or even Homer? Will lakes and rivers still freeze, or have they melted? Can we see wild animals there?
  4. I only found one ice fishing and aurora viewing tour near Fairbanks (Chena Lakes) in that week, is it too late to do that? Do you know any other places we can drive from Fairbanks that we can do fishing and wait aurora?
  5. Where can we see and enter igloos? It should be a fun experience.