Why do you want to keep lift low? What rear gears and tire height?
I think a 220/224 low lift will get you close if your under 3500lbs it should be fine with no stall. Although a trailblazer I6 stall is about $100 and very helpful. I would suggest milling the heads and a mild P&P if its in the budget. A lil head work with a cam will get you over the 300hp goal.