Oh congrats!!! As far as going 8 months pregnant, I'm not sure. I can see both pros and cons. Pros being last "getaway" before the baby, time to spend doting on child #1. As far as cons, remember each pregnancy is different mine were. 1 was uneventful and 1 was full of events (preterm, bedrest, high blood pressure) so I could have went with #1 prenancy but not #2. You don't know what's in store. Obviously if you were having complications you would stay home but . . . I don't know when you can cancel and get a full refund. If it were me, I would try to go earlier if possible, if not and you are doing well and your OB ok's it go for it.
Check with your OB, and finally do whats right for you and your baby.