The bigger the opening, the more volume (bigger fan) you will need to draw the air up.
For the electric system you are looking at, a standard overn hood that is vented outside should work well. You may wish to bump up the fan size on a standard kitchen fan.... if you go with one of the big gormet oven hoods, you will have plety of draw, but a lot of those are 6" duct rather than the 4" duct you have with the dryer.