Combining DPU w/DPUX

Newbie here 🙋‍♀️ Just purchased our first ecoflow product, DPU w/5 batteries & already looking to purchase another but wondering if yall could help. We are looking to go off-grid and have a 4 ton geothermal unit. Would another DPU w/5 batteries be sufficient or should/could we pair what we have already purchased with a DPUX & SHP3?