It's expensive to import stuff. Better to wait until you decide if you want to move here, get your FM3 visa and then you can import anything you want one time only under a menaje de casa. Bring down as much as you possibly can with you on the plane even if you have to pay for extra bags. Bikes you can get here. Prolly no on the espresso machine although ya nevah know these days. Guitar you could bring although there is a shop that sells good ones (expensively) right downtown. Electronics are much more expensive here still although prices are going down a bit. I had to pay a gasping $12,000 pesos for a 42" LG brand LCD television, for example, and I'm seeing similar in the states for nearly half the price. Stereos and speakers quite a bit more expensive.
massage tables I would wait on.
You are correct that it is generally more mellow and laid back here on the island. However, there will be some adjustments to make. Like the differing sense of time can be charming when you're sitting on the beach waiting for your beer and quite something else when the painter promises to arrive at noon and still hasn't come three days later. Then shows up at a very inconvenient time.
We have a carpenter that I am ready to weight him down with a millstone and throw him overboard. What was 'promised' to be a 2-weeks job is now going on pass 5 weeks. It was so bad that I have remind him that his words is his honor, we pay on time, he dilvers on time.
Good thing we have another worker (a real life saver) who does everything (except electrical and plumbing) and shows up everyday; the work he does is just unbelievable! Keep his phone number, you'd never know if you needs it (987-111-3655). Cheers!