No you should not. Not only should you not mix species, tortoises should not be kept in pairs. If you had done any research on here aboth either subject, mixing or pairs, you would have found the correct answer probably a million times over. NO!
Hi. There are lots of reasons why the species should not be kept together, nor
any tortoises at all kept in pairs (meaning any two). Do you have space to make a nice big enclosure for each one separately? If not, can you find a good home for one of them and just keep one in a suitable large space?