Agreed with ijahdan.. I'd separate the bottom layer, then wash your limonene a couple more times with FASW, evap the bottom layer + FASW pulls to yield impure DMT fumarate, which you can do a paste with sodium carbonate and pull with (dry) IPA or acetone and do FASI/FASA if you want fumarates, or evap the IPA/acetone if you want freebase.
If results are still impure you can proceed to clean them in any number of ways such as re-x, re-a/b, etc.