Hay i have same situation like you, thou it seems evidence of financial support is not required for DV selectee filling I-485, i read one of the post of a successful person on this forum he said he went with I-134 but the officer didnt want it. Check on this attached I-485 instruction from the USCIS document. So we should be good even without I-134. Try ur level best to read the instructions documents from USCIS for each form ur filling they have useful information either. Regards an best wishes.