I've raised £800 to take underprivileged Nepali children to Pokhara

In late January/early February I will be volunteering at Nepal Shrijanshil Children Protection Centre in Chitwan, Nepal through Workaway. There are currently 12 children aged 5-18 (either orphans or children whose families could not look after them) and 3 Nepalese adult staff working at the centre.
I will be taking warm clothes and books, but if possible, I would very much like to take the children and adults to visit Pokhara for 1-2 nights to give them a mini-holiday.
The $13 (under 12)-$20 (over 12) bus fare each way is not a lot for a single person, but for 15 people it adds up to around $550-600 round trip, plus the cost of hostel/hotel rooms, and I cannot afford that on my own. This is why I have set up this JustGiving page, to try and ask for help towards the costs of the trip.
I will not use any money raised on my own personal costs, only those of the Nepali children and staff. In the event that the total can't be reached, or that other factors (such as road conditions, weather, their schedule) means that the trip cannot take place, I would use any money raised to buy more supplies for the centre, or other local causes such as schools, orphanages, community projects, etc.
I will provide updates while there on the trip or anything else the money is used for, so that you can have peace of mind that it is being used responsibly.