Visit the Team Iceshanty Proshop
As far as electronics go i would suggest checking out the Lowrance X67C ice machine. Since you arent a hardcore icefisherman you will most likely get alot more of your moneys worth using a dual purpose unit like the x67c. I'm not saying vex and marcum arent great units, but the x67 doesnt get put away for 9 months a year. just my 2 cents.
I just use a regular fishfinder myself. Just bought another one for my boat and made the old boat finder into a portable for the ice. I got a Hummingbird for the boat and I use an old Eagle Supra ProID for the portable. I mounted it in an old tackle box and bought a small Zues 12 volt battery to run it. Bass Pro sells the Eagle Cuda242 or the old Eagle Cuda 168 for $79.99 and I think I paid $28 for the battery which comes with it's own charger. I like the fish finder myself for a couple of reasons #1 being cost, they will tell you water depth and temp and if you're fishing where the fish are. They also tell you fish depth and size. It a good way to get an entry level system cheap. Eventually I'd like to try a Vex if I get to a point when I can go a little more.