Personally, I prefer to put them through scar tissue (so as far as re-doing goes, I think it's good) but a lot of people don't, they find it too difficult. They will scar, but no worse than anything else, and the removal process is simple. Depending on your modifier, there isn't a "Best Way" as of yet, with any of it, since dermals are so new, everyone's just experimenting, but most cut a TINY bit with a scalpel, grab, and pull. Quick, easy, and almost painless.

Personally, i would get them done, let them heal, take the disks off, do the tattoo, put the disks back on.  Once the dermal is healed, the disk can be taken off, as long as you a) make sure it doesn't grow over, and b) remember to put the damn thing back on.... I rarely wear anything on my hips.

hard to say really.. I would suggest asking the tattoo artist that question. (show/explain to them, if they don't know, what it will look like with an "extension" or "healing cap" (i assume you're familiar with these?))

Well that's a year and a bit away, and she wants to get pierced now :P

I would wait as well.  If she attempts to leave the microdermals in place during the tattoo, the process could cause them to reject.  If she has the microdermals removed to be tattooed, she could end up with scar tissue.  The scar tissue oculd affect the overall look of the tattoo, especially if an area is raised or depressed.  I still have a small "hole" where my microdermal was on my wrist, and I've had it out for about 6 months.

I would wait. I mean go through all that trouble because you dont want to wait?
And I feel her. I want chest micros too but I am pretty sure I want something tattooed on my chest.
So I am waiting.
I will prob take way more than even a year and half.