McKee said test matches against Italy, Ireland and Canada present a welcome test as they look to build on strong results across June and July.
"We have a challenging itinerary as Italy will be a tough opposition at home and Ireland beat both World No. 1 and No. 2 ranked teams (New Zealand and England) across 2016-17," he said.
"To be successful we will need our players to arrive at assembly ready to bring their 'A' game and to continue to work hard to build on the gains made across the June and July test match series."
Fiji squad: Campese Maáfu, Peni Ravai, Joeli Veitayaki, Tuapati Talemaitoga, Ratunaisa Navuma, Sunia Koto, Ropate Rinakama, Mosese Ducivaki, Manasa Saulo, Leone Nakarawa, Tevita Cavubati, Apisalome Ratuniyarawa, Dominiko Waqaniburotu, Peceli Yato, Mosese Voka, Nemani Nagusa, Akapusi Qera, Semi Kunatani, Henry Seniloli, Frank Lomani, Nikola Matawalu, Ben Volavola, Alivereti Veitokani, Jale Vatubua, Levani Botia, Asaeli Tikoirotuma, Vereniki Goneva, Patrick Osborne, Josua Tuisova, Timoci Nagusa, Kini Murimurivalu.