By our calculations, you should look at sowing Red ruffled about 32 days before your last frost date.
Many peppers, including the ruffled pimento, seem to like mingling, seem to enjoy touching leaves. Recommend transplanting is with a space of no more than 12 inches. When initially watering the transplant hole, use a liquid having a mix of water and epsom salts, which provides a much needed level of magnesium for good plant and fruit development [I forget the exact ratio, but it can be found with an online search].
As Red ruffled is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.Red ruffles, Pimento red ruffled, Red ruffled pimento