hello,welcome to the site.
i was in the same boat for a time,i liked the idea of building a vertical mill but settled on knocking up a fixed gantry mill,see image ,im fairly happy with it, its sole jobs for plastics and aluminium and it does what i want.
if i were fixed on a vertical mill now id be inclined to just convert one to cnc
Click image for larger version.  Name: router2 039.jpg  Views: 815  Size: 1.22 MB  ID: 9173
Click image for larger version.  Name: finished 003.jpg  Views: 511  Size: 1.06 MB  ID: 9174