What size tires do you plan on running? In general you can clear 31's stock, 32's w/a body seam adjustment, 33's w/the BJ spacers and body seam adjustment or 2" body lift and body seam adjustment. If you are still considering an SAS down the road, buying a new IFS lift would be a waste of money. I went the Trailmaster 4" IFS lift for my '90 back in '94, nothing else was available, however in '07 when I was building my '91 I went with the a 2" body lift and the BJ spacers. Having run both of the BL/BJ lift now for several years, I would definitely go with the body lift and spacers over the brackets.
