once you get to georgetown in the exumas you will find lots of other cruisers staging for the trip south and calls on the vhf for buddy boats
You sound like you think you can go to PR
from the BAHAMAS
You cannot and will need to make the DR first
Get a copy of Bruce VanSants Passages South to see what you need to do as it is no picnic and singlehanding a 30ft. Dufour through it should be quite an experience! Forgive the question but you are new here...Have you blue water sailing experience to confidently undertake this trip alone at this time of year?? Keep us posted.