What is the best order to tackle getting a long-term visa and settling in Thailand for an expat over 70?

I am at the very start of exploring getting a long term visa (maybe Elite for simplification). I was in Bangkok for three months recently to see if the “feel” is right. I am over 70. Will be going back for some 6 months in 2023. But I am not sure by which end to start tackling this plan. Should I first go on a TR visa and look at rental apartments to confirm a place to live ?Should first open a bank account ? When should I start the Elite visa process ? In short: what is the best order to do things, before, during, and after going to Thailand ? Thanks for any recommendations.