Expression: 'He soon retired...'

[Tom]

[Mister Micawber]

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Where is the sentence from, Tom? I agree that the tense relationship does not work. I would suggest these alternatives:

He soon retired and finally had enough time to roam over the country.
He will soon retire and will finally have enough time to roam over the country.

And this is possible in the right context:

He soon retires and will finally have enough time to roam over the country.
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_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Tom]

Here, Mr. Micawber!

Roam vs. mosey
http://www.english-test.net/forum/ftopic9984.html

Tom

[Mister Micawber]

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Or in a narrative:

He soon retired and would finally have enough time to roam over the country.
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_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Tom]

[Mister Micawber]

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It is the past tense of will.
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_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Mister Micawber]

.
Inversion is OK, but should be avoided where unnecessary: it merely sounds dated or stilted.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber