Retirement tax questions

You certainly know your stuff! Thank you again so much! 
We do still have bank accounts, an address and credit cards. I just regret not keeping a US mobile. That was a big mistake. 

It sounds like it’s going to get very complicated doing it through turbo tax, so maybe I should just look for an expat accountant here in the UK? There’s a turbo tax CD you can buy? How long does it normally take turbo tax to complete everything from start to finish? I am just worried about time. We will normally be in the UK for over 330 days per year, but weren’t last year as we only moved here in July, so we will most likely have to pay more this year.