Taking IB year 1 and AP exam?

So my school does not offer AP so my counselor told be that I will be taking IB year 1 my senior year of high school for 4 courses and I will take the AP exams for those courses. However as an IB student your finals for IB year 1 consist of mocks and an actual exam if I’m not mistaken . So I was wondering If I will have to do IB mocks plus IB exam for each subject plus take the AP exam for each subject or if I can do the IB course and just take the AP exam for that course. Because if I’m not mistaken both IB and AP exams are in May and I think that would be really stressful. But also how would colleges view this? Is it a special occurence? If I ditched the AP exams and just did the exams for IB year 1 would it be considered college credit?