The two actions that the consultant should recommend to the project team are replace existing APEX using DataRaptors and HTTPActions, and implement FlexCards and OmniScripts for the front-end. Replacing existing APEX using DataRaptors and HTTPActions would reduce implementation time, as these tools are declarative and do not require coding. Implementing FlexCards and OmniScripts for the front-end would ensure end-user processes are as simple as possible, as these tools provide guided interactions and contextual data. Creating new LWC templates for branding and styling would increase implementation time, as this would require coding and testing. Using existing APEX classes as data sources would not ensure optimal UX, as this would limit the flexibility and scalability of the solution.