To A/C or not to A/C my work space

[weq92f]

We're into like day 4 now of 100+ degree days here with another several in a row to come. Tomorrow's expected high: 109.

My shop/garage is 740 sq/ft with 3 8ft doors made of 2 layers of inch and a half pine with a half inch backer board. There's living space above and a single rear facing door to the back yard. All the walls except for a 20 ft section facing east and about a 10 ft section facing north are insulated as they face into the house.

I'm thinking of buying a 14000 BTU, dual exhaust (hose), portable A/C unit. It's about 450 out the door for this thing: Honeywell MM14CHCS

When the temp outside at full sun all day is 105 in the evening around 5pm, the temp in the garage is about 95. This is with all doors closed all day.

You guys think I have a chance of bringing that temp down any with such a A/C unit?

Thanks,

-klb