Pmey27, a few thoughts.
I don't want to rain on your parade, but you may want to take this endeavor slowly. First, find out if you can even import used clothes as I thought that was not allowed any more. Second, if you can, try a few smaller sample efforts to test aduana and to test your selling market before you even think about starting a company. Then, if everything is ok and looks good, still don't know why that you would need the complication of a company. However if you do go that route, I agree with Rubio that for it to be only in your name as I see only disadvantages to have it in your wife's name. I would also never recommend using family members in a business as this can affect your decision making and cause big problems at home when the inevitable problems with the business occur.
As a side note, remember that any business that requires importing items into the DR is extremely risky as aduana is erratic in their procedures. Beware of people who swear that they have "connections" in aduana as it rarely works out. I knew a couple of guys who years ago started a similar enterprise. The first containers went well, then as the business increased, aduana decided that they had been calculating incorrectly. The result, the last few containers were left to aduana as the tax bill was twice the value of the items imported and they were assessed a huge fine for the prior "undervalued" shipments. They ended up leaving the country to avoid the taxes and lost a small fortune. Be careful.