I have a question on DD DAS can double any 2 card , No surrender bj pay 3:2 vegas style

Min 100 max 5000
betting 1 unit to 10 unit .

If deck is positive would it be better to split to hands the 10 unit bet to $500 or bet $1000 in one Spot.
Again this is when the running count is + 7 or better.

Ely