Have a 2nd home that I only use for weekends in south Louisiana near the water with temps averaging 95 in the summer & only a few months of 40 - 60 degrees colder weather during winter. House is 1000 square feet with high ceilings, large attached garage, raised 3' off the ground and not the greatest insulation with lots of windows. Had 4 companies give me a estimate with 2 recommended a 3-1/2 ton heat pump 15 seer system, 1 for a 3-1/2 ton ac & 1 with a 4 ton ac unit. Thinking of going with the heat pump, will this cool the place down to 72 degrees & is it worth paying the extra $$ for only weekend use?? Don't know too much about them. Thank you in advance for your comments, opinions.