Re: 45' + blue water cruiser
THere is a Jeanneau SO49iP in the NW US ready to travel the world right now, in fact, has been from the NW to Oz and back. if you want used, this might be an option too.
Reality is, as noted, MANY of the lower priced boats you are looking at, including Catalina, may not be totally setup from the get go for offshore work. As most will be coastal cruisers.
Some of the things Melrna has asked for are good starts. May of these can be added later, but if you can get them done from the get go, you will be better off. probably cheaper than done later.
She drives me boat,
I drives me dinghy!