I have all of the same questions as you!
My daughter will be 2 years old in Sept. We have been TTC since her 1st Bday. It looks like we will be doing IUI this month. My health is great (KNOCK ON WOOD) now and I feel pretty confident that getting pregnant in the next few months is best for our family. I had a check up a few weeks ago and my PFT's were 87% which is right where I was just prior to getting pregnant with my daughter. There are still times I think there is no way I can handle a toddler and a newborn but I also cannot see waiting as I would like about 2.5 - 3 years between the siblings. Of course all of this is my plan, I know that things do not always work out the way I think they should but in the end things always work out perfectly!
Good luck to you!!
Wanderlost - My DH always used to say that he would like 3 children but I always said that 2 would be my limit because I do not want to push my body too hard. DH is fine with 2 and never brings up 3. Now that we are TTC #2 I keep thinking about #3, WEIRD! I have not mentioned a third to DH as we have to see if #2 happens and how that goes.