recently and that which came by air was very quick - 2-3 weeks is all that is necessary. So, yes, such a thing can be coordinated. By boat? Another story entirely - we were packed at the end of June & we won't have our bigger stuff until next week! Of course, some of that was Ramadan delay, but do not send anything by surface if you cannot be without it for 8-12 weeks.

However, if you're fully furnished and at least semi-decorated, you should be okay. Also, if the company gives you incentives like extra money for fewer pounds - take it. It's easier in the long run. Ship as much by air as possible.
If it's a specialty electronic thing that you really don't want to be without, send it & buy the transformer - specialty Western-style items cost much more here than they would at home. However, I completely concur with the advice on the everyday stuff - your mixer, blender, toaster, whatever stuff - just buy it here. Most later model US computers can be automatically switched for voltage, so if you want to bring your PC do so (just make sure you switch the voltage before turning it on!) But buy a printer here - it will work much better.

The one thing I wish I'd sent more of in the air shipment? My children's toys! They are the ones who have been getting restless waiting!

Good luck to you!