Roger the rule of thumb is for any plane where the bedding angle of the iron is less than 35 degrees the iron is fitted bevel up.I have 2 shoulder planes with a bedding angle of 20 degrees and a block plane that is even less all of them I grind just as my bevel down planes,thats 30 degree grind and 25 degree hone on all of them.
You may think that with bevel up and putting a fine hone of say 10 degrees on the iron you could get some fine shavings off your stock, maybe? But if you hit curly grain in your stock then your really going to dig into it,in fact when this happens you go the other way by putting a 50 degree grind on the iron and then this turns the plane into a scraper,you pay your money and you take your chance.
Middle of the road grind 30 hone 25,just a heads up but its usual for the irons on these planes to be just a tad wider than the plane over time somebody may have ground yours flush with the plane but it may pay you just to check.
If it is wider leave it like that because that's the way it should be its made like that so you can get right in to the corner of the job but just check its flush every time you use it. enjoy it Billy.