Rate my FIRE plan

So my plan has changed in the last few years due to circumstances, but now feel it's pretty solid but would appreciate another pair of eyes on it to see if I've missed anything obvious.

CURRENT SITUATION I'm 52, already semi retired as work part time for myself, the income for which is enough to live a decent life but no real spare cash to top up savings and/or pension. I'm looking to fully retire in 2 years time.

House £465k with no mortgage, live alone No debts No dependants I have 2 small DB pensions (index linked) that will pay a combined of circa £3k pa at contract retirement age of 65. They inform me I can take it early with an actuarial adjustment of 3.9% pa I have a DC pension pot of £260k Cash savings earning 4.5% of £50k Investment ISA of £50k I don't lead a luxurious lifestyle, but not frugal either and I'd need circa £18k pa to maintain that

THE PLAN I've taken a conservative projection that inflation will average 2.5%, and the combination of savings interest and investment growth (in ISA and DC pension) will be 5% after fees. Give up work totally in 2 years Sell my house for £465k, buy a much smaller one for £250k, deduct £15k for buying/selling/moving costs plus buy a decent second hand campervan for £40k. Leaves an additional £160k to put into savings or invest.

54 TO 60 Live off my savings and ISA from 54 to 60 taking £18k pa, leaving the remainder to hopefully outgrow inflation

60 TO 67 At 60 start drawing on my DB pensions at £2.5k pa after actuarial adjustment Take 25% of my DC pot tax free; £65k leaving £195k in it. Invest or put that £65k in savings Start drawing £10k pa from my DC pot Top up my income by using £5.5k pa from the tax free pot Gives me a combined income of £18k with no income tax due

67 ONWARDS Continue DB at £2.5k Draw State Pension at £11.5k (I have max contributions) Top up with remaining £4k pa tax free cash, when that runs out use remaining savings/investments Pay circa £300 pa in income tax

90 PLUS By my calculations the tax free cash, savings and investments won't run out until I'm into my 90s, if I last that long! Then I can use the remaining DC pot, or even convert it or part of it into an annuity. This is when I'll have to pay full back on income tax

Thoughts? Nothings bomb proof obviously but I wanted a system that gives me the continuation of the standard of living (with additional travelling, hence the van; I've factored that into my projected required income) whilst keeping my IT liability as low as I can for as long as I can. I'm not bothered about leaving a legacy, although my relatives will get the house

Cheers!