you could avoid a glide year had you gone to an SMP, but seeing that you have absolutely none of the reqs fulfilled, med schools wont even look at you. So check to see if your postbac has an additional year to it whether to get a degree or not(some do) then apply in between the years. Do not apply this cycle now, it would be a waste of your money. If the postbac has two years, then complete ALL your prereqs (if you think you can do well taking all of them at the same time), If not, try to get most of em done. But be forewarned, you still might risk not getting in if you dont have all your prereqs done, which means you will face another year not in med school. You'll have a much stronger chance if you blow the MCAT out of the water .