What are the chances of successfully applying for a DTV Visa in Thailand as a retired expat needing medical procedures?

Hello everyone looking for some advice on DTV Visa and thoughts from people that have applied in the past and been successful !

A little about me I'm a retired guy from UK and have been travelling around South east Asia for over 25 years to Thailand , Cambodia, Vietnam and Philippines etc !

I'm thinking of applying for the DTV Visa as I would like to spend longer periods in Thailand in between going to other countries every now and then !

I have a couple of health problems that I need a couple of minor operations operations and there are long waiting lists of between a year and 18months on the NHS in UK and to go for private treatment here is very expensive !

I understand that what I need done would be a hell of a lot cheaper in hospital in Thailand !

I certainly can prove I have the 500.000 Thai Baht is savings and I can also produce proof of substantial savings and details of my full State Pension !

My State Pension and private pension and monthly interest from my substantial savings comes to over £2600 a month which equates to around 110 thousand Thai baht a month so I can clearly prove that I can support myself without working !

if I was able to get appointment letters from Thai Hospitals etc and proof of the 500.000 Thai baht and income !

what are your thoughts on my success at getting this DTV if I was to apply ?

please don't suggest I get a retirement visa as I don't want to live in Thailand permanently I just want to be able to spend more time and only have to leave the the country every 180 days or sooner if I desired !

Look forward to any help and advice and actual experiences from successful applicants that have gone down the same route that I am thinking of !

Many Thanks in advance !