The only way to do that is to weld yourself a steel structure and use cheap supported rails from China. And up the amount of money you are willing to spend. Forget about the Kress. That idea is plain stupid. Water cooled spindle is on another level, even the 800W one. Or buy a mini mill and then make it CNC.

You could also read my email for the quote for the machine you have posted and i have given, so you will understand better what machine for aluminum costs and why. And it is polite to say " thanks" for the quotes given to you , even if you are not happy with price or sth, as somebody spent time to do that and answer your questions. Especially if you are bombarding the forum with the same questions again and again...