I don\'t (yet) own the new set, but if you\'re gonna build your own set anyway (i.e. without use of SH boxed components), you\'re basically free to make up sizes to your convenience. If you plan on using regular GW minis or the ones from the SH set, I think 1 1/2 - 2 inch squares might work out easiest for marking/building, and fit a dynamic genestealer/terminator nicely. I don\'t think Space Hulk uses precise inch measurements for weapons range and such, more relying on distance in squares, so you should be fine.