Website Integration Fedex API

Hello I need to create a simple connection to my FedEx API account to show shipping prices to my customers. My site is built in WordPress and I currently have a sample of what I need but the calculation is set to manual so it's not connected to my FedEx API. My website is at [login to view URL] The sample offline calculator is at [login to view URL] I will like it as simple as it shows in my sample Since this form is not connected to FedEx in real-time, some of the steps will not be necessary in the real API connection. For example, the part to choice Items Quantity is not necessary, I will use the original FedEx API fields, the only extra work I need from you is to make an option to charge extra if the visitor needs us to pack the products and or Pickup the products locally, I also need the option to add an extra fee if the visitor is an agent or not. You can run a test in my sample form so you can have a better idea The FedEx API account is in Colombian Pesos so I will like to add $50,000 pesos for Packing and $50,000 pesos for Pickup The is the visitor select that he or she is an agent, they add $5,000 pesos to the final total For example Let's say someone is shipping a Box that is 23 Kilos and measure 50x50x50 CM and FedEx returns a price of $358,000 Pesos. First, this price has to be hidden until the end because at this point we do not know if the user is an agent or not and if we have to pack or pickup the product so, for now, the return price from FedEx must be hidden. Now back to FedEx price let's say it was $358,000 pesos so to this price I need to add my commission which will be 45% of the FedEx price so in this case $358,000 + 45% = $519,100 Now if the user selects to package and or Pickup the product, you need to add $50,000 for packing and $50,000 for pickup Now if the user also selects that he o she is an agent, you need to add 5% to the final total Then after all these steps, we can show the final price to the user. This API will act as an estimate, which is not the final price, I just want my customer to have quick access to an estimate to avoid multiple quotes requested by phone at this moment. Please let me know if you need any additional information Thank you