I have just returned from another extended holiday in Asia & I love to travel. However, I have no dependants & savings.
My suggestions
Rent your property out with an agency
You will need money for agency fees, repairs emergencies, tax on the income. You will need gas & electricity safety certificates in place before you rent out your property.
Speak with agency how much you could rent your property for & their fees, normally 20%.
Get a credit card & tell your bank what countries you are due to visit, so that your card does not get blocked while you are abroad.
Flights are the cheapest, the earlier that you book
Accommodation is cheapest if you organise it while in the country that you are travelling, also trips & things to do, because you pay the local rate. So just book accommodation for the first couple of days, then look around for cheaper options.
Places like Thailand, Vietnam, Malaysia, Indonesia, Philippines, Cambodia are cheaper compared to UK, but be aware of strict visa requirements.
Places like Australia, New Zealand are very expensive
The temperature & heat was oppressive this time & I am used to travelling. It doesn't get cooler at night, 35 to 40 degrees. Walking around equals 1 bottle of water or liquid per hour per person, just to stay hydrated.
Get vaccinated before you travel
There is no NHS abroad, so ensure that you have travel insurance for all of you & spare money to pay for treatment at pharmacy, walk in doctor, hospital if necessary.
I would suggest going on holiday for a couple of weeks as a test first
If you have any further questions let me know