Let's start with the Eight of Pentacles reversed. This card indicates that the situation is fundamentally positive and is signaling a period of prosperity. In the context of the question, this card can represent a significant opportunity for success in your new job. The energy that accompanies this card suggests that you can achieve good results.
We pass to the Four of Swords. This card represents a certain level of uncertainty, something you are still trying to figure out and that you will have to face before you can make a decision. In the context of the question, this card can represent any doubts or concerns you have about your new job. There may be hurdles to overcome or problems to deal with before you can see success in this new venture.
From the two papers, it can be concluded that the answer to the question is mainly Yes: all the elements are present to favor the success of your new business, but you will have to take into account some difficulties to face before achieving the desired success.