THE OP posted this on YC and got loads of responses similiar in nature.
Apparently she doesn't have the money to purchase 5 airfares, and has made her decision accordingly.
Since it's a financial concern, and she's already made up her mind prior to posting, there's not much sense in continuing to respond.

I just checked the OP's profile which says she has 2 kids, yet the OP says 3. What's with that?
YC is the Your Choice branch. The alternative high school of the Thorn Tree.
I hadn't checked the profile. Perhaps it's a troll posting just to garner opinion!

Sorry....but no i am not a troll I am about to have my 3rd baby soon so i haven't really worried about updating my profile. Why would I ask if I had already made up my mind. True i can not afford to travel the intineray i want with my kids, but i was asking if any one else had done it....and i got both positive and negative remarks. It is still i while off before we are actually departing but i was trying to get a feel about how it would effect the kids badly.
I was just throwing the idea out for some opinions, i think people here are to quick to JUDGE ( thats different than an opinion) and to quick to call people trolls.

now i'm lost.
you are about to have your 3rd baby, but want to travel soon before you start your career, and suddenly your youngest child is 3 yrs old when you go travel?
or do you mean that you are planning 3+ years ahead???
that's a long time, many things can happen.

We started planning our biggest trip about three years before it happened - mainly for financial reasons. I'm assuming Gulumalemana is pregnant and getting ready to start lawschool, looking ahead to when she will be finished. If I were pregnant and staring at three more years of school, I'd certainly be looking for a focal point in the future to help me through.
But I think you can plan your kids into the fun.

Take them with you they'll love it... you want it to be an important part of your life... do they not deserve to be a part of that??? Work out the percentage... your youngest is three... what proportion of its life will you be away for? Think of a car journey... are we there yet...??? on a 50 minute ride... SIX MONTHS... think about it..... take them with you... grow together.... PLEASE....

I am planning the trip for about 3 years...or 3 1/2 years depending when i graduate, this is as put a focal ppoint. Sort of my reward for finnishing a treat before i have to start working.
Currently investigating ways of visiting parts of Africa that are OK for kids without costing a million and that i feel is OK for the kids....any suggestions.
Also I know in Asia some hotels a double means 2 beds, what about else where through out the world or is double 2 people. or would we have to get 2 rooms

I guess I am from a different culture, but here "many people" DON´T send their children to "boarding schools" like EuropeBoundSteph said. We don´t even have boarding schools. And no, I would not have even considered leaving my children for six months. Make it three months instead of six and take the children with you. And travel with their terms. Children are wonderful travelling companions, better than many adults who complain and are cranky.