I found AMIDuos a rather painful experience on much more powerful (i7) hardware; I can't recommend it, and I haven't found any other Android-on-Windows solution that holds out much hope for a non-developer (the Chrome extension "Arc Welder" has some promise if you're willing to hack things up.) IOW: If you need native Android apps and can't find either a Windows Modern or desktop version of the application, you're better off getting an Android tablet.

As for the Surface 3, it's slow; the processor is slow but tolerable if you're the patient sort, but the eMMC they use instead of the SSD is potentially the real killer. The 2gb of memory is potentially a big issue if you multitask, although it's manageable for casual use.

If you run a limited set of applications, or are mainly browsing, then it's probably going to be OK (again, if you're patient); if you run anything disk-intensive or memory-intensive... uh, ouch.

I'd imagine the 4GB version would be a good bit better at multitasking and the extra memory might also help mask some of the disk performance (for that matter, the 128GB eMMC -- I think it's always 2gb/64gb or 4gb/128gb?) might perform just little better... but the one I had a chance to evaluate for an afternoon was the base 2GB version, so I can't say for sure.