With the Seven of Pentacles we can say that Marco is offering you a good job opportunity. The card represents a desire to achieve excellence, so what Marco is proposing could be an interesting challenge and with which it is possible to achieve good results. Your ideal about the job is to achieve excellence and, according to this card, this opportunity could be an important step in the right direction.
The Four of Cups seems to indicate that you might be tempted not to take this opportunity. There may be something stopping you from accepting, such as a sense of dissatisfaction with the work you're already doing or a fear of tackling a new project. Apart from this, the Four of Cups can also indicate a sense of loneliness or isolation, so you should make sure you are not neglecting yourself or your needs while making the decision.
In conclusion, even though the Four of Cups card might suggest that you should consider your concerns before accepting the offer, the Seven of Pentacles card seems to indicate that the opportunity presented by Marco is a way to reach the excellence and is therefore an excellent possibility to be considered. Therefore, the most likely answer is Yes: you should accept Marco's job offer.