Should I use a financial advisor?

Answer to self- no. I stay well clear of most no-name investment companies with expat staff based in Thailand. Sure signs that the company is a rip off shop or just not capable of giving good investment advice:

1) The expat investment advisor staff are not on a salary, they are paid by commission to sell the companies investment 'product'.

2) The investment advisers are former English teachers. Nothing wrong with being a former English teacher, you just don't want serious investment advice from one.

3) The investment products they offer are weird or unorthodox and not offered by any of the big financial investment institutions (HSBCs, Goldman Sachs, banks etc of this world), typical products include plots of land that are divided up among investors, student accommodation in UK etc.

and the big red flag...
4) they cold call you offering you investment advice.

If they meet any of the above, stay well away.

My advice would be to stick to the big global companies or read up yourself with the right books, mags, newspapers