Congratulations, i had 15mths b/w my girls and i LOVE it..it can be hard work but they get to the stage where they occupy each other, they eat at the same time etc and it all works well.
I actually enjoyed the NB and toddler stage, DD2 slept and i still got quality time with DD1, i find it harder sometimes now when they both want attention and are both old enough and alert enough to realise they are not getting it.

I totally agree with getting a sling or carrier, a double pram is a MUST, i have a tandem rather than side by side as my DD1 basically doesn't sleep in the pram anymore.
If you don't have one one of the little electric swings is great, DD2 loved being in it while i cooked tea.

Good luck with your PG... all the best.

FWIW my cousin has a 10.5mth age gap b/w her youngest kids, she had 2 kids, tried for the 3rd for years and years had quite a few losses, had bub #3 and a month later fell PG again, i can tell you she was VERY shocked but seems to be coping very well.