The correctness of the purchase is always important. Especially if you will deliver it to another place, and not pick it up in the store. Therefore, once you have everything to be agreed with the delivery company, then there will be no delays.
I can advise you to apply to the customs broker https://clearitusa.com/. If you need delivery in the US and the country, then this is one of the best options. All the necessary moments are described on the website of this company.
Each delivery has its own preferences or disadvantages. It is true that there is a direct dependence on geography. Because you can not send something on the sea, where there is no water. In general, the delivery company always picks the best option for delivery to you.
Yes, it does not take much time. Especially if you use good logistics. In prinitsa, it can take up to a week. Or so.
Wordpress will be the simplest option. Jumla requires a little knowledge. I would advise to start with Wordpress unequivocally. Themes and templates for the first and second you can easily find . Look https://www.templatemonster.com/blog/free-wordpress-themes-writers/ wordpress writer themes for you.