Platform for chimney support

[Vermont2014]

Good morning all,

Finally getting around to installing a wood burning stove in my 24 ft yurt in NE Vermont. I live 7 hours away and don't get up there but a couple of days per month.

By the time I get the stove installed the ground will be frozen and I will not be able to pour a concrete support pad for the chimney.

Would it be possible to pour the pad and install the supports without knowing for sure what size and brand of stove will be installed?

Thanks in advance for any advice.