I have chickens to make compost for my gardens. I get eggs as a bonus!
I spend less than 5 minutes per day taking care of my chickens, on average, with twice a year cleaning of deep bedding in the coop that takes me less than 2 hours. Chickens don't have to be labor intensive.
I have a 5-gallon hanging PVC bucket feeder that I fill halfway and it lasts my 10 chickens for about 10 days. I also have a 3-gallon water fount which also lasts about 10 days between refills (depending on the weather). I would imagine that you could find someone to check up on your chickens and refill the feed or water, if needed, while you were away for a week or two.
I am not a big fan of most pre-fabs I have seen. They cost a lot of money and are not made very well. IF you can find someone selling or giving away their old pre-fab coop, then that might be a good option to consider.
Lately, I have been liking the shed conversions to chicken coops. If you decide to no longer have chickens, you still have a nice shed for use.
I live on a lake with hawks and Bald Eagles overhead all the time. I put inexpensive bird netting across the top of my 2X4 6-foot-tall fencing. No attacks in 3+ years!
I don't allow my chickens to free range. Where I live, it is just a free chicken dinner if you let them run unprotected out in the yard.
I dump all my grass clippings, leaves, chipped up wood, and just about anything else organic into my chicken run. In fact, I turned the chicken run into a chicken run composting system. I get more value out of my chicken run compost than I do in eggs. Well, compost at the big box stores is very expensive where I live but a dozen eggs (until recently) were less than a dollar a dozen. I literally can harvest hundreds of dollars of chicken run compost every summer instead of buying bags at the big box stores. Additionally, I now have a bigger garden and grow more people food.
I have had great success with using T-Posts and 2X4 wire fencing that is 6 feet tall. I can easily go into the chicken run, with bird netting attached to the top, and not have to bend over. At my age, bending over to do chores is not a thing I would like to do.
Dog kennels are another option that would be really easy to put up yourself. It only takes me a few minutes for me to fasten the dog kennel panels together. Even easier if you have a helper.
My chicken run is only predator resistant, but I have a Fort Knox coop that protects my chickens from nighttime varmints. The coop is about as predator proof as I can build.

3+ years without a successful attack. The 2X4 fencing was good enough to stop a number of neighborhood dogs from getting to the chickens. Locking them up in a Fort Knox coop at night lets me sleep well.