I'll agree that you probably wouldn't have any problems, as long as the perponderance of the frame along the bottom of the tank is sitting on the stand.
I had a similar situation, sort of ... I used the standard AGA stand which only supports the stand around the outer edge and is open in the middle. My main area of concern was that the top edge of the stand where the tank contacts it is only about half an inch wide, while the frame on the bottom of the tank is closer to a full inch wide. The outer edge of the top of the stand also had a slight bevel, which cut down on the contact surface. Hence over half the suface of the tank frame would be unsupported. This also required that the tank be placed perfectly and exactly on the stand with little margin for error, lest the tank not sit squarely on the stand.
While I asked and got numerous comments that the arrangement was fine, for my own peace of mind I felt compelled to do something about it. My solution was to get a piece of plywood (Can't remember the thickness off-hand) and cut it to be just a hair wider/longer than the stand (Probably half an inch or so). I painted it black to match the stand, drilled a couple of large holes to accomodate the drain and return, then placed it between the tank and stand. Now the entire frame of the tank is in contact with the supporting structure, and I picked up a teeny bit of wiggle room when it came to placing the stand on the tank.
Having a painted stand (instead of your unpainted wood) made it easier and the plywood looks as if it's part of the stand. If, like me, you'd feel better with more contact between the stand and tank, a plank of the same wood and finished the same would suffice.
